What is with ranked matchmaking

I swear to god it's broken. I don't even understand. I usually go into a ranked game and have confidence in EVERY game with a high winning rate. But after this week, it's the complete opposite. My confidence has been crushed. I look at winning as almost impossible at this point. It's as if Riot is matching up all the people on tilt AGAINST the players that are not. Seriously, I lose ONE game, and then the tilt really begins. It's sad because every ranked game, I EXPECT to lose now, which isn't how ranked should be. No matter how hard or well I play, I cant seem to win.