How to do post-session analysis well?

Good morning everyone, I'm writing because I need advice and help to improve my game. I'm a microgrinder on .it. Although I easily beat the 2 and 5 with around 10-12 evbb/100, I find some difficulty in maintaining the same results at the nl10. Could you tell me which filters to use to properly analyze the errors I make using hm3. Thanks to anyone who wants to give me a hand.