do you need a high sensitivity to play widow

hi all, i’ve never been super precise with hitscan hero’s which is why i play hero’s like 76 but i actually really do like playing widow but im just so bad, ive done it all ive tried practicing in aimlabs, widow HS and in custom games but nothing seems to work for me and it feels like i cannot move my arm fast enough to hit headshot but playing on a higher sens makes me even worse, i will occasionally pop off and hit a few good shot buts its not a every game type of thing. I’ve been playing OW since ow2 came out and i feel like i have pretty good game sense and positioning but just not the mechanical skill, if you have any advice i’d appreciate it and you can also just tell me if it’s a skill issue and i’ll keep practicing