Play other roles!!!!
Too many times in competitive i come across people who can’t tank or support. The answers always the same “I haven’t played (x) role before”, which leads me to think why the hell are you playing a ranked mode with open roles not knowing how to play all roles in the game??? I get it you’re probably the best dps ever, but you won’t be able to prove it if you don’t have a frontline protecting you and a back line healing you. So swallow your pride, go into the practice range and try out each tank/support and save us all(including you) from point loss.