if league doesn't fix banning system i am leaving league of legends forever

never want play again at some point i ask my self why do you play when you know that you ban someone and noting happens if it isn't afk or leave there is no real punnishment why should i keep playing when a mundo doesn't protect my red buff or when he feeds 0/9 a mundo and just doesn't give a fuck what am i supposed to do cause thats not a bad game thats bad attitude and not giving a fuck so tell why should i keep playing if these people don't stop popping up. it shows that the tribunal doesn't work atleast in my cases i would wanna know taht you what that mundo ain't gonna play for a month or that support jax ain't gonna be playing for a long time no because afk but because HE FUCKED THE WHOLE GAME . SO yeah till that happens i have no reason whatsoever to keep playing game sthat get ruined by my own teammates that can't stop reminding me that they don't give a fuck and that they are better than me if this is League Of Legends I Want Out /if you can't punish people for all the reports what the point of them being there?