This should had been one of the very first precautions you should have taken as a gambler and not waiting for the market to experience so bad outcome before this pops into your head. Keeping your investing funds together with your gambling funds make it an easy spending source for when your bets aren't going your way and you need more funds to continue betting.
Regarding the coin I use to gamble, initially I started with the platforms native token and that was one of the criteria I used to select my preferred gambling sites since the bonus usually associated with them were mouthwatering but this day I used any cryptocurrency available on the platform surfer that coin can't determine or affect the outcome of my bets.