The last time that I checked in my country, there is no credit card company that is allowing purchase of cryptocurrency directing with our debit cards because crypto is still against the law of the central bank, and until the government fully support cryptocurrency before they can also consider to permit the purchase of cryptocurrency with card.

Hough I still make fiat deposit into local exchanges with my credit card, since they are third party, I guess they already know how to work around it, so I think that is still the only way for now that you can use your credit or debit card to make payment of cryptocurrency, which is going to strictly be through third party exchanges like the local exchanges around you.