No violent become success

I'm so sad of bullying, when i was playing soccer with having violent in the game. When there is some fighting each other in the game, I always tell them to stop those bad happening. When we are playing, If you don't like something in the game, u would keep calm. After the game, you should tell your teammate about the bad things that have happened in the game. You should give them some advises without showing violent during the game. all of these things are making the game become more excited, fun, friendly, helpful, interesting enjoyable............. etc.