My classmates always laugh at me when I walk, and I dare not contribute to playing basketball with others. I am always afraid that they will laugh at me. What should I do?

Change it if you can. If you can't, there is nothing you can do. If you play ball, you can see a Brazilian player named Barbosa, who is also a famous NBA player and the main force and core of the Brazilian national team. He was an outsider when he walked. Don't let others' ridicule affect your life. Playing ball is your right, and no one can stop you if you want to play.