Depends! If you only have a classic Girocard in Germany, iDEAL in Netherlands, Przelewy24/BLIK in Poland, Bancontact in Belgium for example, you will only be able to use it on services that support them. Amazon and PayPal support these schemes (as well as SEPA Direct Debit), but other than these, it's rare for non-domestic services to be accepted.

International payments are a huge huge goddamn mess and I do not envy anyone who has to deal with their peculiarities.