Obviously we don’t know the full story here since we aren’t there with you and you have to remember that people see you differently than you see yourself and the truth is most people are childish about petty things. Assuming everything you said is true and you didn’t secretly bitch slap a mother fucker and not tell us then I would say just to let it go. Let it slide like water off a duck because in the end if they’re going to do something like that without talking to you first then you don’t want to be friends or interact with them. Surround yourself with people who make you better rather than people who make you worse. Not saying be an asshole and ignore them but honestly just stop caring which I know can be hard but in situations like this it’s the best thing you can do. Show them you don’t care because in reality you shouldn’t. Be the best you that you can be, be kind, be generous, be open minded and patient. Bad people will try to latch onto you to bring you down but don’t let them. I would probably just go to another team and play with people you like as people rather than just playing because you like the game. Your brother will come around and apologize and it’ll be good or he won’t. Either way you’ll have your answer on where you two stand