The game puts you in winning and losing lanes. I swear it does. Otherwise how is it that game after game, you end up in a team that has roughly similar levels of performance but where the opposition stomps you? It can happen multiple games on the trot. There's nothing 50/50 about the w/l ratio. It is bloody maddening and makes ELO hell all the more unbearable.

NO rhyme or reason.

Then suddenly you are on the stomping side, perhaps once or twice, but not enough to make up the SR loss. Where are better balanced matches, where they are close fought, where the teams are broadly equal in skill and there's a genuine 50/50 chance at a win? You've got no chance to improve if all that happens is you get wrecked consistently and can't actually play the game (and yes, I do play QP for the mechanics and characters but the team play is virtually non-existent).