Need some help

I just upgraded from 60 fps to 300 and now i can’t even aim. I was so good at 60. What should i be doing except for practice range aand drills. I can even figure out my crosshair and sens at this point . Need help😭
(Does making a new account and start over would help?)

Just keep practicing on 300

Well for the sensitivity I would download aim labs and do their free sensitivity test, and while it won't give you the perfect sensitivity it will help you get close to an actual sensitivity you feel comfortable with rather than just trying a bunch of sensitivities. Also you could try to switch which hand you gun is in.

U r cooked

Skill issue