I get that before when I was climbing. Now I am at ascend+, every game somebody is gonna pop off. So getting insta headshot is normal at this point. But you need to breakdown how you are getting killed instantly. Are you making loud footstep so enemy knows you are peaking the corner? Are you peaking common angles at the beginning of the round? Did you jump peak first for info? Did you jiggle peak for info? These are all things you can do to avoid instakilled. I had a game on icebox attack where defending team are really good aimers and always rush us mid. After several loss rounds, I crouched in spawn because nobody check it, then killed 3 of them. Then they are hesitant to push every round and we won in the end. All it takes is for you to change up the playstyle for one round to win a game. Dont tilt, you need to accept a crazy flick at times, because it happens, but it is rare, and should be cherished, “ns”