[SalesForce] How to pass lightning-input-field value as a parameter to controller class method in Lightning Web Component

Requirements:

I am building a Custom Mass Transfer Records functionality where Based on Object Name and Owner, I want to display List of Sobject Records owned by user.
Once List is displayed, I want to assign all selected records to New Owner.

I have created generic object Transfer_SObject_Record__c where I have added 2 fields Type(Picklist) contains Sobject name that I want to define and Owner(Lookup:user)
fields. based on these 2 field's value I want to display SObject records with Name field and Owner as a column in the List.

Problem is I am not able to pass lightning-input-field value of both fields to my controller class method.

Error Message that I see on Screen : objType & owner is undefined

Can someone please suggest how to pass lightning-input-field values as a parameter to controller class method?

Below is the code that I have written:

transferRecords.html

<template>
    <lightning-card>
        <div class="slds slds-p-around--medium">
            <lightning-card>
                <div class="app slds-p-around_x-large">
                    <div class="slds-p-top--small slds-text-title">This screen allows you to transfer the records
                     </div>
                    <div class="slds-card__header slds-grid">
                        <div class="slds-card slds-m-around--medium">
                            <lightning-card variant="narrow" icon-name="standard:topic">
                                <h1 slot="title">Find records that match the following criteria</h1>
                            </lightning-card>
                        </div>
                    </div>
                </div>
            </lightning-card>
            <lightning-card>
                <lightning-record-edit-form object-api-name="Transfer_SObject_Record__c" onsuccess={handleSuccess}>
                    <div class="slds-m-around_medium">
                        <div class="slds-form-element">
                            <lightning-input-field field-name='Type__c' value={objType} onchange={handlePickChange}
                                required>
                            </lightning-input-field>
                        </div>
                        <div class="slds-form-element">
                            <lightning-input-field field-name='Owner__c' value={owner} onchange={handleChange} required>
                            </lightning-input-field>
                        </div>
                        <div class="slds-m-top_medium">
                            <lightning-button variant="brand" label="Search" title="Search" onclick={handleSearchClick}
                                class="slds-m-left_x-small">
                            </lightning-button>
                            <lightning-button variant="brand" label="Reset" title="Reset" onclick={handleResetClick}
                                class="slds-m-left_x-small">
                            </lightning-button>
                        </div>
                    </div>
                </lightning-record-edit-form>
            </lightning-card>
            <lightning-card>
                <template if:true={sObjects}>
                    <template for:each={sObjects} for:item="sObj">
                        <p key={sObj.Id}>{sObj.OwnerId}</p>
                    </template>
                </template>
                <template if:true={error}>
                    <!--   <c-error-panel errors={error}></c-error-panel> -->
                    {error}
                </template>
            </lightning-card>
        </div>
    </lightning-card>
</template>

transferRecords.js

 import {
        LightningElement,
        wire,
        track,
        api
    } from 'lwc';
    import {
        ShowToastEvent
    } from 'lightning/platformShowToastEvent';
    import refreshObjList from '@salesforce/apex/ReassignSObjectHelper.refreshObjList';
    
    export default class MassReassignSObjectParent extends LightningElement {
    
    
        @track sObjects;
        @track error;
        objType = '';
        owner = '';
    
        handlePickChange(event) {
            this.objType = event.target.value;
            console.log('objType:' + objType);
        }
        handleChange(event) {
            this.owner = event.target.value[0];
            console.log('owner:' + owner);
        }
        //this method is fired when retrieve records button is clicked
        handleSearchClick(event) {
    
            console.log('Clicikng on Search:');
            const val = event.detail.value;
            console.log('Search Val is:' + val);
            this.template.querySelectorAll('lightning-input-field').forEach(element => {
                console.log('Element is:' + element.detail);
                element.reportValidity();
            });
            refreshObjList({
                    objType: objType,
                    owner: owner
                })
                .then(result => {
                    this.sObjects = result;
                })
                .catch(error => {
                    this.error = error;
                });
    
    
    
            handleResetClick(event) {
                const inputFields = this.template.querySelectorAll(
                    'lightning-input-field'
                );
                if (inputFields) {
                    inputFields.forEach(field => {
                        field.reset();
                    });
                }
            }
        }

transferRecords.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
    <apiVersion>48.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
    <target>lightning__AppPage</target>
    </targets>
   
</LightningComponentBundle>

Controller Class:

public with sharing class ReassignSObjectHelper {
    
    @AuraEnabled(cacheable = true)
    public static List < SObject > refreshObjList(String objType,String owner) {
        system.debug('calling refreshObjList');
        String sObjQueryString;
        String objName = objType;
        system.debug('Object Name is:' + objName);
        String ownerId = owner;
        system.debug('Owner is:' + ownerId);
        String fieldToRetrieve = sObjectField(objName);
        system.debug('fieldToRetrieve' + fieldToRetrieve);
        if (isSObjectAccessible(objName)) {
            sObjQueryString = 'SELECT ' + fieldToRetrieve + '  from ' + objName + ' where Ownerid=:ownerId limit 10';
        } else {
            sObjQueryString = '';
        }
        return database.query(sObjQueryString);
    }
    
    
    
    public static boolean isSObjectAccessible(String sObjectType) {
        system.debug('Calling isAccessible:');
        SObjectType schemaType = Schema.getGlobalDescribe().get(sObjectType);
        system.debug('schemaType is:' + schemaType);
        Schema.DescribeSObjectResult objResult = schemaType.getDescribe();
        system.debug('objResult:' + objResult.isAccessible());
        if (objResult.isAccessible()) {
            return true;
        } else {
            return false;
        }
    }
    public static boolean isSObjectUpdateable(String sObjectType) {
        system.debug('Calling isSObjectUpdateable:');
        SObjectType schemaType = Schema.getGlobalDescribe().get(sObjectType);
        system.debug('schemaType is:' + schemaType);
        Schema.DescribeSObjectResult objResult = schemaType.getDescribe();
        system.debug('objResult:' + objResult.isUpdateable());
        if (objResult.isUpdateable()) {
            return true;
        } else {
            return false;
        }
    }
    public static string sObjectField(String sObjectType) {
        system.debug('Calling sObjectField');
        List<String> objectFields =  new List<String>();
        String query;
        SObjectType schemaType = Schema.getGlobalDescribe().get(sObjectType);
        system.debug('schemaType is:' + schemaType);
        Schema.DescribeSObjectResult objResult = schemaType.getDescribe();
        
        Map < String, Schema.SObjectField > fields = objResult.fields.getMap();
        
        for (String field: fields.keyset()) {
            Schema.DescribeFieldResult describeResult = fields.get(field).getDescribe();
            if (field == 'Id') {
                system.debug('Id');
                objectFields.add(describeResult.getName());
                query += field;
            } else if (describeResult.isNameField()) {
                objectFields.add(describeResult.getName());
                System.debug(field);
                query = field + ',';
            } else if (field == 'OwnerId') {
                system.debug('OwnerId');
                objectFields.add(describeResult.getName());
                query += field;
            }
        }
        return query;
    }
    
    
}