I suppose what you want is to find a site that does not require KYC and that at the same time is safe. These days, it is complicated, since generally sites that do not require identity verification tend to be less reliable, as operating without regulations also means they are not subject to laws that protect users.
Regarding the Trustpilot ratings, they are very subjective when it comes to casinos. Generally, most people who leave reviews do so to complain about a previous issue, and although it may be resolved, many forget to change their review.
If the solution is to opt for a non kyc bookmaker that will assure one of not being scammed, am sure such doesn't exist singly, as it would be a taboo, instead one could find a bookmarker that is a serious business and make good profits and even claim rewards without any discrepancy of kyc or not.
There's so many casinos these days that offer what our OP is looking for in a casino, but the issue would be to know the region he lives in, the laws guarding casino businesses and kyc requirements as well as requirements for using a crypto currency casino.