If you want to learn something, you have to be first and foremost willing to practice today almost forgotten activity - reading.
Use the brake in the way it is intended to be used. Brake is to be used to perform tricks! The purpose of the brake is not to step on it and hold it for 10 minutes while you are going down the street to school.
Misuse of the brake results in creating flat spots on the PU. And you can snap the break too.
If you want to brake / stop the scooter, jump off the scooter or use your foot (shoes).