Ranking System is a Joke
Okay, so I've already sent a ticket to Riot support about this topic, and they say that who you play with is based on your MMR and same level skill level, and the more you win, the more difficult your opponents will get, but honestly, that's just a joke. Literally I can't even get a half decent team anymore because the ranking system is so ridiculously broken. It ruins the experience for many players such as myself, to actually be able to climb out of each rank, instead of being demoted constantly due to players who are somehow ranked near the same MMR.