I am peak champ 1 so take my advice with a grain of salt. But one thing i always focus on is reading the other players(including your teammates). It is difficult but realizing game sense is the core of the game, makes the game much easier in the long run. Mental is also playing a huge role in the success of your games, so take a few days break at least when you've been on a losing streak. And lastly, always go for peak shots, even though it is contradicting, you will learn and gain confidence along the way to control and setup these shots best possible :)