Broken Matchmaking

Look at how terrible the match making system is. Every one of my defeat is because the other team consist of more platinum or diamond players than my team. Just about every damn game I'm getting these non-ranked, silver, or bronze players. Now of course Riot expects me to stay calm and not be toxic, but how can you do that when I can't even enjoy the fucking laning phase since my opponent is a nerd. This game is so fucking unfair.