Mouse speed is a personal preference thing, but like with all Apple devices, you can adjust it to your taste and comfort. It’s actually super easy, but if you run into any trouble, check out this article
https://setapp.com/how-to/how-to-control-the-mouse-acceleration-on-mac. By the way, I always disable mouse acceleration when playing games. It really messes with precision, and when you need to aim or perform some technical move, it makes a big difference.