peripherals

Hey there, I recently got this Redragon M602 I didnt have a lot of budget and a friend recommended this mouse so I went for it. I wanted to ask about DPIs. The mouse says it has 800/1200/1600/2400/7200 DPI range, can someone guide me what range should I keep my mouse on? I only play Fortnite...

I only play one game and thats CS2 I recently got myself a Corsair M65 Ultra but I guess there is something wrong with the way I am holding it because my hands really hurt (esp the wrist part) after gaming for a while. I am not so sure about the way mouse grips work should I change the way I...