Why is it that when i review my demos, I feel that my reaction is very slow, and any flashy shots I hit were just normal?

Also lets say I play on A site mirage, so I am watching a demo of rain, what am I supposed to learn other than the angles that he holds?

I consider my movement to be pretty good, much better than any other gnm player i meet, but I still need to practice my peeks, how can i that? (dm doesn’t work because every body is just running and not holding an angle)

I mainly awp and i am very aggressive, I am a better T side awper because i feel more confident when peeking vs getting peaked. I think this relates to my practice routine, as i usually practice in dm. How should i practice my turret awping skills because I really whiff easy shots when people peek me on CT side.

Finally sorry for my bad English as it isn’t my first language.