The era where maestro cards were impossible to use abroad was already over ten years ago. The only thing you might need a creditcard for abroad is hotels and car rental, which you wouldn't be able to do with any kind of debit card (outside of a relatively small selection of hotels).
In the US & China, it had big maestro stickers everywhere, but it didn't work at all. Different cards, different banks; on calling the banks they said they did not even see a transaction coming in and they the cards are set for international travel (and work fine everywhere they are accepted in the EU).
And it's not for lack of trying; One time on a big slog from US -> China -> AUS, I (stupidly) brought 1 credit card and 3 maestros and my CC got cancelled (fraud); I tried literally every atm , shop in these countries and could not get $1. I had to borrow from my colleagues. This is a few years ago.
This depends on the credit card company but mine is very willing to charge back if I call. They find it pretty trivial.
I’ve never done anything like this with a debit card or bank though. I think the money that leaves through debit is actually gone and that’s a distinction. I know the EU is more debit focused.