Yes i get the same,and gues what,i send them email at support to explain my problem.
I keep loosing game with weaker oponents then me,also with posesion +15% i still loose games.

They want to spend money to keep playing to have performance...
I dont know why they do that,i get an email from their support and they didnt answer to my question,they only sayd :

"We try to make this game better every day" and thanks for your answer,i really apreciate and i understand exactly nothing.

P.S : I am also at lvl 8.