Please stop doing this and being a jerk

I admit that I am a shit player and make many dumb mistakes, but I also understand that league is a team game. I would rather jump in a fight and try to save my mate from death but also take some damage instead of backing of from a fight to save my own ass. What actually amazes me is when I jump in to help my teammate in a 1v1 situation where its obvious he is going to lose but we can win in a 2v1, they just leave me fighting and run away for their safety. What usually happens is me getting killed for trying to be nice and my mate recalling and spamming the chat with how I'm feeding. wwyd