Riot, why

Why in 90% of time i got the team with lower MMR? My win/loose ratio was like 25/1 now its getting down and i cant understand why always my teams are Feeders or AFK... no matter what lane i play how much drakes and Barons we do :D enemy team just make LCS comeback and -23 points :D and for a win i get 10 points Rly?