You mean to get back some of the money you lost playing on the casino in question?
If this is what you mean, then I want to ask you how possible is this that a casino will return all or part of your loses after you have gambled and legitimately lost the money to the casino, simply because you looked on chain and saw that the money you lost is still sitting right there on your deposit wallet address on the casino..
I can't help but to ask you, if this happened the other way round, would you have been willing to return money to the casino? Like let's say you are the one who won this money from the casinos, and today, the casino management reached out to you asking that you send them back this money you won from them, or that you should send back some part of it, would you oblige or agree?
Sorry if this is not what you mean but this is what I understand from what you said, please correct me if I understood wrongly.