Apple TV device and app are both not working!

My Apple TV app doesn’t work on

my iPhone 12 Pro Max [version 16.4.1 (a)]

I downloaded the app, restarted it. Uninstalled, and reinstalled it;

to come back to the same result,

a black screen:

Library - No Videos.

Your synced videos appear here.

So, I bought the Apple TV device,

4K 2022 3rd Generation, and updated it, along with the smart Sony tv. Logged in with my account, and couldn’t find

the Apple TV app, and not even

in the Apple Store.

I change the region from Kuwait to US.

Restarted it. Reset it. Nothing! All other apps are available except for Apple TV.