Installing apps on Apple Store
I have a problem installing some specific apps on my iphone 11, its continuously say the app is not available in location
If an app isn't available in your region, you won't find that app in the App Store.
Apparently, the app has been removed from the App Store.
If an app has been removed from the App Store, you can no longer download and/or update it.
I also have some paid & free apps here, and those apps have been removed from the App Store.
Sometimes an app is removed from the App Store because the developer has stopped updating, or for other reasons.
It is highly recommended to always download / purchase apps, music, ringtones, etc. from App Store or iTunes Store.