Been playing echo from overwatch for a while and I was wondering if a character that can mimic abilities fit in a game like valorant in the first place. Is it even possible?

I am diamond 2 rn and usually play omen, but I feel like every single time I play I always bottom frag because I constantly whiff. I believe this to be due to me going into every gunfight thinking that I'm going to lose it. I feel like due...