Why I don’t gamble with Bitcoin is because of the recent rise in the cause of transaction, I am more comfortable holding my Bitcoin and gamble with other coins must especially if the gambling site allows deposits of altcoins that are stable in price.
There's no altcoins that are stable, unless you are using stable coin itself, the popular stable coin is USDT and it's still high in transaction so you can use it in gambling as i think there are also few sites who are accepting usdt.
Yes there are sites who accept stable coin, if you are not comfortable using either your BTC or any other alts then this options is good to go.
Especially if you are in a budget and don't want to over waste your fund, you can simply limit your budget each time you place your bets you know how much money you are already spending.
always depends from how gambler look at this point, there are always options to use.