Some can be new and still be great. Remember, every business starts one day. Just look for Crypto gaming site that has provably fair games and play with. You can test their customer support to see how proactive they are. Those should be the deciding factors.
I don't need to find provably fair games or sites since there are a lot of gambling sites out there that is provably fair and is trusted and tested by a lot of gamblers worldwide. Finding more and more provably fair sites might lead you to scam sites. Also, testing a customer support is annoying sometimes since you wait for some time while as I said, there are a lot of trusted sites out there.