but unfortunately not all gamblers want to do KYC, especially gamblers who are more concerned with anonymity. they will not like or perform KYC on any site and especially gambling sites. so they prefer to look for gambling platforms that do not require filling out KYC to keep gambling.
but keep in mind that gambling platforms request KYC not for security but to verify whether the gambler is in a money laundering case or comes from a country that is prohibited by the gambling platform.
Depending on the size of your bets this could be impossible, for whales or people that like to gamble regularly this is not going to be easy and most licensed casinos will at some point ask for this information, however for the people that just gamble once in a while and do so with their spare money such a thing could be possible, especially if they prefer to gamble at several different casinos, as in that way the amount of money wagered will be even smaller and the chances of triggering some sort of flag that makes the casino to ask for this information will be even lower.