For instance, YouTube Premium charges 12€ in my home country. However, where I’m staying now they would charge less than 3€.
So, if I would like to take advantage of this, I assume I’d need to create a new Google/YT account, which would mean I’d lose all subs, playlists etc that I’ve created?
Or am I missing something here?
You’d probably need a billing address and credit card from the country you are trying to register in. You can probably just pick whatever (valid) address you want, but getting a credit card would be hard, and billing addresses not matching the address registered with the bank tends to trip fraud detection systems
I do have a local debit card actually, which I already use for YT prem.