Ive been playing this game for a year and I feel like im only really getting worse, Ive tried alot but nothing really works, any tips?

I'm a pretty garbage player with 29 RR in Iron 1 and i have aces in spike rush and unrated but i decided to play comp. I got an ace and almost got a heart attack in the process. I'm so happy :)))

this might sound stupid but for me there is only one way to find out. So i use a logitech g402 and i was wondering if i put the adjustable poling rate to its lowest and practice like that if it will make my aim even better when switching ba...