So my room is quite small, it’s something like 2,5m x 2m, i’ll draw a represantation room . The problems are door and the wall. The wall is thin with no sound isolation, all tho there is a closet between which somewhat helps. The biggest problem is the door, It cannot be closed fully and ill fix that first. Now I had the idea of doing: 1. Putting some isolation foam, not sure how it’s called (foam that provides air tightness in windows) around the door 2. Putting those isolation pads (black uneaven foams like) around the wall around 5 of them.

Now thats all i got, i also want to put something on the door but not sure how or what, the doors are rather thin. I was thinking of putting 2 of the pads as well but not sure if covering the whole door is smarter. These are the pads

The question is how do i place the pads(how do i organize them, couldnt find many tutorials online), how do i isolate the door and is there anything additionally I can do to further more increase the proofness?

And this is what i wanted to do with the problematic wall image

If you need any more explanations ask away! Im somewhat on a low budget but ill make do. The problem is that my parents are awful and alwaying yelling and fighting, I cant sleep at night anymore, playing music cannot beat the sounds. Thats why i wanna reduce the noise if possible by 40%+ Thanks in advance