can you suggest me some good writing and music clubs to take part in,or some national competitions.

For clubs I think you should look to see what is available at your school. If you don't have clubs that you like at your school you should consider starting one! It shows good initiative and leadership. Maybe there are some local writing or music groups you could look into too? I'm not sure how popular that is though.

In terms of competitions I found some articles that might be helpful. Here's one for writing stuff (https://blog.collegevine.com/the-college-vine-guide-to-high-school-writing-contests/) and here's one for extracurriculars if you want to potentially study music (https://blog.collegevine.com/extracurriculars-for-high-schoolers-interested-in-studying-music/). Hope this helps!