Hacker in Rivals PC

I just faced someone with a bronze/gold team in Division 4 Rivals. They did not move at all and after ~20mins ingame time my game just closed. The game did not close on me before at all, so I'm 99% sure it was the opponent doing this. Their ingame name was "ToxxicityR" other indentities are "SamJ" I don't where else to report this so I'll just post this here.