Am I doing something wrong?

First two image is mine.

Look at this guy I played with, he's toxic as hell and clearly not skillful, by looking at his plays as I played around him easily, he really aint that good I swear. But the only thing he won is because he got better teammates and I decided to look at his stats and compared it to mine. You can't really deny that I'm doing better than him, it's just the difference is that I get bad teammates whilst he gets really a good team. I believe theres something wrong with my matchmaking system how do I fix, I genuinely think mine is rigged