I can't play anymore

I just lose 39 LPs because of what? http://prntscr.com/fgbq7q this.. that riven trollbanned yasuo when that annie wanted him, the game started, MF died, and guess what, he went on feeding every single lane, who followed, yes annie followed, 3 trollers in on goddamn match, just one, in the one before, we were winning, had damn good game, until another asshole went afk, and we lost, almost every single fucking match, the top laner goes afk, and we have a troller, i have nothing to do, normals are the same, it's all the same, and guess what i regret the most today? getting disconnected and not being able to report that MF who kept on laughing..guess what, i am sure he isn't getting banned..