Silver player wanting to improve.

Title says it all. I've tried tons of things, but nothing seems to stick.

I'm starting to think, i need outside help. I am asking anyone of "higher elo" if they would like to play some games, and point out some mistakes that i lack the knowledge to know that, that is a mistake. idk maybe i think that it is not a mistake cause no one in my games punishes me for it. I'd rather they be normals, as ranked could be called elo boosting which isn't allowed :p we could even 1v1 in a custom :D