legality of online crypto-gambling in countries like the UAE or Saudi Arabia, where traditional gambling is illegal, is a complex issue.
Is Online Crypto-Gambling Legal in a Country Without Gambling Laws?
I don't think it doesn't matter whether it's crypto online gambling or fiat online gambling since the bottom line is, if online gambling, in general, is not allowed or illegal in a said country, then it should cover all online gambling, at whatever gambling type.
The legality of online gambling varies per country. It's good to research the web specifically about how online gambling is treated and viewed in the Middle East countries. It's also good to discuss this with those users directly living in the involved countries if somehow you can manage possibly to interact with these people.