help with middle east version InDesign

It is not enough to change the language to say "English يدعم العربية" to get Arabic support in your InDesign. You will still need to download a fresh copy of InDesign after changing the language in the Preferences of the Adobe CC desktop application.

Just make sure you have removed existing InDesign first, otherwise, if you want to keep the existing version (the English version I presume) and have the second version installed with Arabic support, just download the fresh copy of InDesign in a slightly older version since you cannot have two InDesign copies of the same version 2021 on your machine.

If you've changed your language setting to Arabic/English in the Creative Cloud app preferences, you should be able to uninstall and reinstall the InDesign app, at which point you should have the ME edition installed. You may be able to just install without uninstalling first, it's been quite some time since I had to do it myself.

Edit: fixing phone typos