Whats up with mm?

38% win rate silver 3 in a mid gold game the silver 4 toplane with 30% win rates on his two most played champs and a first time are sol who just goes 4-8 and gets caught doing nothing. 3 of them chose first time champions. My team did equal damage to their lee sin while I did the most in the game. They had 3 gold 4's a smurfing silver 1, and a GOLD 2. Like what in the fuck? my teammates all have shit win rates and I only have a 60% win rate.... Smurfing or not its extremely unbalanced. The only person that belonged was the janna.