Please explain this to me

Brand blamed me for the entire loss of the game. while i can admit i didnt play well at all, but its unfair to say it was all one guy(we all lost lane btw). he then proceeds to try to trash talk me (and i really do mean tries) and fails terribly after i bring up ashes build and asking wtf she was doing : Garen stfu. You're parents are probably on welfare and stuck in dead end jobs ouch.