What are my options if I got arrested for using an illegal substance?

I got caught using an illegal substance for the first time in Dubai and was detained for a period of 35 days.

I was arrested on 20/10/2022 and got bail on 24/11/2022.

But my case is still pending and under investigation.

How much is the penalty for an Emirati national and how long will it take till I see the public prosecutor again for a conclusion on my case?

P.S. first-time drug user.