You can find the list of Unlicensed Bitcoin Betting and Bitcoin Casino sites at this page.
These Bitcoin Betting and Casino sites are not licensed. So make sure that they offer Provably Fair casino games so that you can prove the fairness of every game you play. No government authority is checking these games for verification. So you better look for a badge from Provably Fair verification authorities.
You can look for a badge from iTech Labs, Crypto Gambling Foundation or Blockchair or check the games yourself. In order to check the games yourself you can use third party fairness verifier tools. If they do not have a badge and not licensed as well, think twice before you make a deposit. In some cases, the casino site might have a license but not using it at their website due to their unlicensed operations in the US market. We would advise to their Live Chat operators for more information in that case.