Leaving a match bc of toxic teammates

This last time wasn't really that bad, but I'm so sick of toxic teammates. I play league to have fun and destress. In all honesty, college is kicking my ass and I'm in a really fragile state. I was being flamed by my teammates. It was mild, but it kind of just felt like the straw that broke the camel's back. Usually I can handle it, but I 'm so weak mentally. I told my team that they were hurting my feelings and that I wanted to cry, and their response was "cool". I knew that I was already in too deep to just mute and keep playing. I was already tearing up and ruining my game. My problem is that Riot doesn't care why you leave a match, just that you left. If I left because my emotions can't handle another person telling me I'm useless or flaming, I feel like punishing me reinforces toxic behavior. I don't know. I know leaving matches is bad. It's only the second time I've done it in all my time playing. I know people will say "don't play the game if you can't handle it", but I feel like that just reinforces League's toxic community too. I don't know, if I say I want to cry trying to get you to stop flaming, with tears in my eyes, is it really my fault I left? I want to play the game. Some teams are so nice even when you're losing. Usually when teammates are flaming other teammates, I try to tell them to stop being rude to their teammates. It gets the team nowhere. But, nobody really stands up for me. Not even Riot, obviously, bc they don't care if I left bc of toxicity or just to be an ass. I might be rambling, but I'm tired of toxic players being the ones rewarded if somebody gets fed up and leaves.