I'm from the states and have been using a betting website to do some light sports betting. They do not allow US citizens and so I used a VPN to gain access. They only require an email address to create an account, and no KYC unless you want to buy crypto directly from them. I will not name the site for various reasons.
I hate KYC but this is your own fault. Why did you play on that casino if they clearly stated that they don't want you as a customer? You knew the risks, you still wanted to play and now you lost your money. If the money is not going to harm you in anyway, $1200 is a nice amount for a lesson like that. Now you know why you should care about the rules and if you don't, there will be consequences.