Lf midlane coach!

Hi all, I'm currently a mid lane main. I really would like to improve, however I'm struggling to do so. I'm a very fast learner also. This is the 3rd season now that I've hit platnium, I had a solid 63% winrate but I started losing a lot of games because I can't carry. Thanks guys, Ingame name is LetzGetFizzical

I'm a platnium 3 player.