This is the golden rule. If you just lost files from your "D:" drive, do not save anything else to "D:". Every new file you write to that drive risks overwriting the very data you are trying to recover.
Cease writing any new data to the affected storage device.
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We recommend this way to download app, because it has less change to your current Apple ID.
Before you update your location, you must spend your store credit, cancel your subscriptions, and get a payment method for your new country or region.
For more details, please refer this url:
https://support.apple.com/en-us/HT201389