That was a very huge risk that you took right there, it might not really be about the site but probably your strategy failed you, and gambling is even just on luck based and you were lucky to have escape this major crash in your fund, you can imagine how much you would have lost in future if you have lost the money you would have just used in investing in other altcoins, that 800 usd could give you over $6000 in the next altcoins bull run, and I think you should desist from betting with your money and do something reasonable with it.

If you have to pull it out of your bitcoin investment which was not right of you to do now that bitcoin has started its bull journey, the best would have just been for your to use it to diversify into other crypto coins, and if you have to gamble at all maybe gamble with 20 percent of it.