For the future, when you go to a new casino, double - even triple check whenever you withdraw. Goes for any transaction at any time and for any amount, too. It's so easy to avoid issues if you don't speedrun life!
Lesson learned !!!! I don't know why gambler will fall to this mistake when you only have bitcoin address in separate wallet (Unless you are using exchange wallet of course)
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Hoping still that OP will get His funds back in the sooner time.