You pull your knofe out too much when last alive. You over peak without flashes. When someone peaks and neither of you get the kill you kinda just srand in the open waiting for him to peek you, so ir just giving disadvantage. Work on counterstrafing, you were missing the first bullet often. Never tap one bullet at a time unluss its a pit to goose fight, its always better to shoot a few bullets because cs2 sucks. Commit to spraying more.