It's so difficult to be a positive influence

So I just played a ranked game where I was super nice all game and every single one of my teammates were the most toxic, negative, infuriatingly childish people I have ever encountered. They rotated blame, blaming our ekko first for not having mana when yi went to gank, then blamed him for our darius dying while trying to gank his lane. Then Darius cycled through people, until he eventually came to me. I was called a useless support by a 3/9 darius, when our lane was the only lane to win a single tower. It was just an unstoppable force of negativity. There was nothing I could do to make my teammates stop spouting pure hatred, racist comments, and that ":) You're bad dude LOL" "You're useless :)" crap all game. I can't understand how they don't realize their problem. If you're cycling through people to blame, you are missing something!!!!