Sniper only standing in one place, we lost because of him!

I just got bashed by one guy who i regulary play with, that i was a death weight, only standing in once place and doing nothing as widow, meanwhile i had 20ish-7 kill death ratio and repeatedly killed Reinhardt and mercy to make life easier for them and the chance to cap, while i was constantly harassed by a genji. I usually play as a reinhardt, i keept telling him to shield me (he was zarya) so i can ram the bastion while the enemy reinhardt was protecting it, couldnt get close since it ate my shield like nothing, and my party members keept dying cuz of it, ofc he ignored me and changed to junkrat. so i got fucked up and started taking the enemy out with widow. After the match ended and ofc me lost 2-1 (capture) he bashed me that i was a death weight and why didnt i go capture, "Widow is good at close combat" im like wat? just because it got a smg doesnt mean im a female soldier 76... isnt it for pure self defense?