My biggest win was at Bitstarz Casino 3 or 4 years ago.
I deposited 0.2 BTC and won 11BTC.
The BTC price at this time was arround 450$.
I played in the following weeks and months at the same casino and lost all of my winnings.

Wow!
11BTC! That's a lot of Bitcoin.
I doubt if it's possible to win this amount in recent gambling sites. I guess its because BTC price was low them. One will be damn lucky if they are able to win 2BTC in one game at a stretch.
I would have given it a long break before playing again if I were you; they indirectly collected back the winnings
