You are using an account from l.w which is the largest instance in the lemmyverse so if you create a community, there is a good chance people will notice. You could also spin up your own instance but that isn't for the faint of heart but you could sponsor one or hire someone to run one for you. You can run accounts on as many instances that will have you and they can be named whatever you like.

My real point is you have real options that don't end with a walled garden dictating what you can and can't do. It is a bit rough around the edges but give it time.

There is absolutely no reason why there isn't an Arabic first instance or web of instances. Start off small and see what happens. Get a community setup on your instance and post about it. Don't be discouraged if progress is slow. Inertia is rife in all walks of life. People in general are a bit crap! The fediverse is no different, especially because it is all rather new to a lot of people.

Arabic and Islam (there I've said it) are often conflated, so please keep the faith (hah!) and either find or develop your community as you want it.

Fediverse - effort required and a really crap colour scheme!

Good luck 8)