Can I make a suggestion? As it is, the player is betting x of resource y to potentially lose or double that amount. If they have enough y, it doesn't make sense to do, and if they need y, it's mostly an easy way to take longer to get the amount they need next, given the high odds of losing the bet.
If the casino had 1 to 4 options, randomly generated, to bet x1 of y1 for a 50/50 chance to win x2 of y2, that might be tempting. "I'd happily bet 50k pebbles for the chance to win 5 stardust", that kind of thing.
If the bets reset every two minutes or so, camping the casino would be boring and suboptimal, but visiting every so often a potential boost. So, it'd be a distraction, which feels thematically appropriate.