The article https://support.apple.com/HT201389 describes how to change your Apple ID country or region, and the requirements and results of doing this.
You may encounter various issues and here is how to deal with them:
● Remove all your Apple Account balance using one of these two ways (if you use the first one you do NOT need to contact Apple):
- Add a credit or debit card to your account and buy items (not subscriptions) just in excess of your remaining balance. This will use all the balance and any excess will get charged to the card.
- Use the link in this article --> https://support.apple.com/119902 to contact Apple about removing account balance. Apple will keep the balance.
If you cannot empty your account balance you will have to create a new Apple Account in your new country.
● Subscriptions
Make sure all subscriptions have been canceled (see: https://support.apple.com/HT202039 ) and have fully expired. If you do not want to wait, you will need to contact Apple and request any ongoing items you have to be ended immediately.
In the legal documents: https://www.apple.com/legal/internet-services/itunes/us/terms.html#:~:text=When%20your section I you will find, "When your Paid Subscription to any Service or Content ends, you will lose access to any functionality or Content of that Service that requires a Paid Subscription." Make sure you have downloaded any data you have stored in iCloud and any media purchases you have made. Unfortunately you are likely to lose Apple Music playlists. Any apps you have currently will remain on your devices but you may not be able to update them or re-download them in your new country unless they are also available there.
● Payment Methods.
In the first link above, Apple says: "You might need to enter a valid payment method for your new country or region.” Refer to the list in: https://support.apple.com/111741 Note that some payment methods in that list may not be acceptable to set as a payment method for country change purposes; for example, account balance. While Apple has through the years avoided making any unequivocal statement about the country origins of such a payment method, using one from a financial institution in your new country may be the easiest way to ensure you don’t run into problems.
● Pending purchases and refunds
If you have pending purchases, or refunds in the process of being returned to you, you will have to wait until these clear. You can canel a pre-order (see: https://support.apple.com/118414 )
● Leave or disband any Family Sharing groups.
Refer to https://support.apple.com/HT201081
For items where you need to contact Apple to resolve an issue, see if there are options for a live chat or telephone call at the bottom of this page --> https://support.apple.com/HT201232 Select your country. Not all countries have all options and telephone numbers tend to only work when calling from the same country.
Setting up a new account won't get around all this. For example, all Family Sharing members have to have their accounts set to the same country and while you can now transfer subscriptions from one account to another, they would have to to be set to the same country.
I know this isn't ideal but it is the way Apple has things set up. If you want Apple to know your thoughts, click on this link for Apple products feedback links --> https://www.apple.com/feedback/#:~:text=Product%20Feedback
Apple may not respond but your comment will be read.