Do great in normals, suck in ranked
So I'm a Yasuo main (blah blah I know downvote me I'm an asshole kill me. Bleh.) I'm a Yas main, and I have an 86%winrate with him for the past 25days in normals. In ranked, I have a 43% with him. Any particular reason I might suck ass in ranked compared to normals? Is it just psychological? Help a brotha out!