Good afternoon. Could you recommend a casino for my friend where it is possible to pay with cryptocurrency, since there are few of them now?

Hello! I'd be happy to recommend a cryptocurrency casino to your friend. Check out https://cryptogamblinghelper.com/crypto-faucet-casinos/. This web service is a great choice for those who want to use cryptocurrency to play at a casino.
On this site, your friend will find a variety of casino games, including slot machines, roulette, poker, and others. The main advantage is that they accept cryptocurrency as a payment method.