You can't remove a subscription. Was it the app, with a subscription, that you removed? Apps can be removed from the store by Apple or the developer without warning. If you leave it on your device it will remain there but it cannot be re-downloaded. If you changed countries between the purchase and deleting the app, it simply may not be available in all countries, a decision made by the developer or the new country's laws.
Have you asked Apple for a refund? Apple's terms of purchase in the USA are, "All Transactions are final" (https://www.apple.com/legal/internet-services/itunes/us/terms.html ), but some countries have different laws so check terms for your country at: https://www.apple.com/legal/internet-services/itunes/. If sales are final then it is Apple's decision if they want to grant a refund. You can always ask, and people do get refunds on a case by case basis, but Apple can also say no. To request a refund:
Request a refund for apps or content that you bought from Apple - https://support.apple.com/HT204084
Report a Problem - https://reportaproblem.apple.com/?s=6
If a reporting a problem request is unsuccessful, this support page has information about contacting Apple support and service ➔ https://support.apple.com/106932 If live support options (chat and/or telephone) are available they will show near the bottom left.
- Telephone numbers may only work when calling from the same country.
- Chat options (telephone numbers appear as active links, not plain text) may depend upon cellular connectivity. If a number shows as an active link, click on it to see additional options.
- If chat is not available on the top level support page, try selecting your hardware and narrow down your issue to see if a support article offers a support link offering chat. For example, the contact support link on this page https://support.apple.com/119902#zerobalance offers a chat link about emptying account balance even on a computer where the top level page does not offer any chat.
With an iPhone, iPad, or Vision, you may be able to chat using the Apple Support App if it is available in your country —> https://apps.apple.com/app/apple-support/id1130498044
It would be helpful at this stage to know if you have changed country settings. You would probably have to request a refund from the store country where hte subscription was purchased.