This is maybe not what you want to hear but it’s what you need to understand. You need to focus first on understanding form. Basic 3D shapes and breaking the human form into a simple mannequin will help you improve far faster than learning the names of the muscles. This is one of the most consistent and wrong pieces of advice that new artists are given., “Study anatomy”. Anatomy is detail, and detail without structure is not worth your time or effort. Learn to draw the body as a 3 dimensional object first and then it will be much easier for you to lay the anatomy on top.
Can I get some feedback on drawings or can I get feedback later
Absolutely you can. Just to explain why I gave you the feedback that I did, in my experience, when a student is struggling with a more advanced skill it’s because they either haven’t learned (or are not applying) a more basic/fundamental skill. What you’ve drawn has a decent amount of detail in it, however it’s very flat. You’ve drawn the muscles more as a collection of details that are floating within the outline of a male torso. For example the pectoral muscle inserts into the arm just below the shoulder muscle, so when the arm is raised the pec stretches and creates a line over the armpit. The deltoid muscle meanwhile, rotates with the shoulder so you won’t see a hard line between the arm and the shoulder girdle like you’ve drawn.
Can I get some feedback on 2 point perspective background I drew or can I get feedback later
Not on this particular thread, no.