I use 3200 dpi with 1.1 in game sens. My friends say its too damn high but idk why I cant use anything below that and I feel like the mouse is fighting me. Any suggestions?

I just played my first game with my most toxic team ever. I was third fragging on the team and they still were like, "He needs to try Aimlabs", I know my aim isn't great but I would rather spend my time playing the game casually than going...