An In-Game crash

Hello, I'm asking myself what happens if it crashes suddenly in the middle of the game and you get 5 games low queue ban. I got really pissed off, because I really enjoy playing, and I'm thinking to quit because of things like this. It was a ranked game and we won at the end. Also, they took 20 LP from me, so I'm really giving a lot of effort climbing and now my mmr is lower as well. I hope that Riot can make it up because it is not my fault. For a game like this, that kind of things are unacceptable if you ask me.