Every casinos always claim theirs is the best and they want gamblers to flood theirs. And in return gamblers like to play in casino that is friendly with them and give them bonuses with no withdrawal problem. And as for me the best casino is the one which doesn't stress players with KYC and do not stressed gamblers with withdrawal issues.
It'll be challenging to find a casino that doesn't require you to submit kYC. For the purpose of money laundry, the government have made it compulsory for most of the famous casinos. Aside that, I would go for a casino that have no withdrawal and deposit issues as the best. At most, one, that has a reliable customer service rep, that'll be there to answer questions when there is a financial dispute.
It's never challenging to find casinos that have no KYC complaints, there are even links to that on many threads on the forum, but the issue is that they might later ask you for the KYC while the integrity of others is questionable. This is why people are forced to gamble with KYC casinos, especially the most-liquid and reputable ones. To overcome that hurdle if insisted, the decentralised casinos are the best options here, it will give you the rest of mind if you can part ways with the blockchain fees regularly and I do not think that's a big deal especially when they can't cheat you with your money like the centralised ones that have control over your money whether or not you complete the KYC. By that, the issue of withdrawal fear must have been eliminated.