Forgot Mac login password

I am helping my brother set up his new Mac. He already started setting it up before I had the chance to help him and somehow entered a login screen password that he now can't remember. So now he can't use his new computer.

Here is the model: 2022 Apple MacBook Air Laptop with M2 chip: 13.6-inch Liquid Retina Display, 8GB RAM, 256GB SSD Storage, Backlit Keyboard, 1080p FaceTime HD Camera. Works with iPhone and iPad; Midnight

Any suggestions would be greatly appreciated!