What should I do now?

I think we should adjust our mentality first. Why can't you talk about your dreams? In fact, it is a good thing that you are admitted to the university. There are too many stages for you to play. If your parents don't believe in your musical talent, you can show it in front of the teaching assistant. No matter what you do in the future, there will be a stage suitable for you and many opportunities for performance, such as the company anniversary.