Originally, the verb "to go" meant "to walk", but it has come to mean a number of things in addition to walking.
I go to the store frequently does not necessarily mean that you walk there. You could drive there too.
I go to school can mean that you are a student.
I went home would mean only that you left and made your way back home by some means. One could not infer that you walked.
So, in situations where you want to refer specifically to walking, in order to make perfectly clear that you mean "walk", the word "walk" is simply clearer, not more natural, than "go".
How did you get home? Did you take a taxi? I walked. ("I went" would be unnatural.)
DIRECTOR TO ACTOR: when she looks up, you go to her and put your arms around her.
Perfectly natural use of "go" to mean "walk over to".
DIRECTOR TO ACTOR: What did you do when she looked up? ACTOR: I went over to her.
Natural too.
In this case, "try" and "try out" both mean "to test/examine".
You have to look at what comes after the "try":
- try + noun = test: Shall we try the new restaurant?
- try out + noun = test: I want to try out the new Mercedes.
- try out + for = attempt: I'm going to try out for the football team.
- try + on = test clothing/accessories: Try on this perfume and see if you like it.
- try + infinitive = attempt: Let's try to get seats close to the stage.
Check your question to see how I edited your example questions.
Best Answer
In my opinion, "Try" is usually for something a little simple. But "Attempt" shows a little complexity or increase in difficulty level of whatever is being attempted.