It all depends, some may not require for kyc on making withdrawals but will give a minimum withdrawal amount, which if you're unable to have such balance on your account, you may not be able to withdraw and this is something entirely different from the normal kyc related issues affecting gamblers from making withdrawals, from my experience, most casinos will demand for kyc before allowing for making withdrawal except for few.
If a gambler is just betting small amounts, then KYC probably isn't a big deal. Even though most popular casinos here are KYC-compliant, they don’t usually ask for it unless it’s necessary. But the OP should be ready, since regulations can change, and the casinos have to adapt.
I’ve noticed some Telegram casinos showing up; maybe they’re the solution? Correct me if I’m wrong, though. I’m not too familiar with that kind of platform.