the matchmaking rigged conspiracy
I don't buy into it, but sometimes I think they have a point when I've had a good few days of winning and now I find myself 1 out of my last 10 or so with a high amount of people just afking or being tilted after one death and throwing. these are not even close losses, the conspiracy lives on and with this anecdotal data someone could believe that's its all riots fault for the horrendous luck of games that coincidently came right after a slew of good games. I certainly don't believe that, but I understand where people come when they say "forced 50% wr" however in the end it just happened to be a streak of ugly games in quick succession and you have to move on.