Violin level 9, what is better to practice etudes?

Maras is ok, the start is a little simple, not bad. After all, it's not easy to practice simple music, but it's ok to practice it in Laclais Zell, and it's even harder to practice Dunt and Rod's music. If you have a solid foundation before, you can practice it or try Paganini 24 Capriccio, but it will be more difficult. You can try.

Actually, I don't think it's difficult to pull the etude down. The hard part is that every point meets the requirements. For example, some etudes practice bow skills, while others practice fingering, speed, intonation, timbre, flexibility and rhythm. It is difficult to do it in all aspects. Maybe this can't be solved only from etudes.

I hope you'd better learn from the teacher, after all, everyone's situation is different, and the focus of practice will not be the same.