Problem

So I gonna come out and say it since no one will probably care anyway but I have this problem. I think this is the reason I get penalized a lot and banned. I..... Get angry a lot when I die as Anivia.... Funny thing, I won't get pissed off if I die as anyone else, yasuo? Pssh, Warwick? Meh. Anivia and I get aggitated or enraged a bit, but I don't know why. If I lose with her, die at the end of the match (Even if we WIN), or end negative, I get upset or slightly irritated. It's usually due to not getting a win or constantly losing with her. But I just can't figure it out how to avoid it. I doubt anyone else deals with this problem but I any one knows what to do then I'm listening.