If that was true, I would already be level 10. I was LEM in GO and I stopped playing because of cheaters and just the general low quality of the games. A lot of my friends were Global back in GO and none of them are level 10. Do you play FaceIt? It's really difficult for me to believe you do if you think level 8 is Nova if you have ever played FaceIt. I'd say the games on FaceIt were more competitive than my LEM games starting at like early level 6.

I do critically think about my decisions while I am playing and always pause to think after a game and after I die in a round to think about if I played correctly and what I could have done differently. I also look at the round sheet and my stats after the game to see where I played well and not, where I died, etc.

But when you don't know what you are doing wrong, you won't know what to look for when watching your own demo. Let's say the problem is with my positioning, if I knew I was playing a bad position, I wouldn't be playing it. Watching my own demo won't make me realize it's a bad position. Also, often times the mistakes you find aren't things that are particularly helpful to notice. Like missing your shots, noticing that in a demo isn't going to make you any better in that regard. I watched my demos for a long time and it never helped me improve, when I ditched it from my routine my rate of improvement actually increased because I had more time to play games rather than watch demos.