Why is there no single player in “looking to play” section in CSGO and every time I solo queue I get matched up with new accounts without any medals

With laptops, framerate drops frequently occur if the laptop is not plugged in and charging. The fluxing you're talking about may be because you're playing CS:GO while its charge.

Just try it out and see.

Given your explanation of the cfg, it would appear that it's designed to simulate an Eco round.

That is when you have lost a series of rounds (or lost the first ever round), the last one of which was a gun round, you don't have enough money for a full buy but your enemy does.

In such cases "Eco" is called where you save your money during that round and only get cheep but good pistol and maybe one nade.