Real decentralized casino offers only limited games solely house games/original games only since 3rd party game providers such as Pragmatic, Evolution and many more usually require license to operate and can be only play via centralized casino.
Decentralized casino is really the best answer to this thread assuming the OP is not looking for 3rd party games that involves license.
Some CEX offer no KYC however, they have the right to ask KYC in case your account show some potential violation on ToS.
Well I say something, to enter a decentralized casino it is sought that they do not ask for the KYC, because if not, then such an effort does not make sense, it is a fact that things are like that, a decentralized casino that asks me for KYC then I leave, it does not make sense, the casino if it determines that I am violating the Tos, then it would leave me much worse, I who am a regular player, I would not have a single skill or anything like that, then I would have the worst of all experiences. I did not know that they had those restrictions, simply like that you cannot play.