Riots Matchmaking is just like Christian Mingle

While i was playing late night league, ya know, late night when people miss all their skill shot's and mess up because "Too Tired". Anyway, that's besides the point. The point is that during the night, a usual low elo silver team, against a Diamond Yasuo. A Diamond Yasuo, who did nothing but carry and pubstomp us. Our brand may have fed, but this is the ONLY Excuse for feeding, because if a S5 Player is against a diamond Yas, what do you think will happen? That's like ganking a Darius that has full build with 5000 HP and qing at least 3 people in a 5 v 1, then pressing the point and click R. Anyway, FIX THE MATCHMAKING. I'm getting PTSD.