[Demo] Dazen | LEM | ~250hrs in game | Help me improve and what am I doing wrong?

Hi! I started playing CSGO in late November, early December 2016 and I'm wondering how to improve my game. With ~350hrs in game and ~150 competitive wins I'm jumping up and down between LEM and SMFC. I have no idea if that's good or not but I'd love your opinions on my demo down below.

This is a game with randoms in MM where my team lost 7-16. What am I doing wrong, what am I doing good? How can I improve my game?

Cache 7-16, Dazen

EDIT: I have ~350hrs in game, I typed wrong in the title.