It's unlikely anyone would ever connect a debit or credit card to a crypto-based casino, but for fiat casinos it can happen.
If you really want to connect a debit or credit card it's better to use a new one because I'm sure everyone must have more than one card so as to minimize financial expenses for excessive gambling and also to protect against other things such as hacking.
But we are in the crypto gambling industry so there is no need to use a debit or credit card.
We know if anyone wants to connect their debit or credit card to a crypto casino, but I suspect someone will. Those who do this probably have so many people that they don't mind using their debit or credit card to deposit money directly. They should really limit the use of money on their debit or credit cards so they don't run into problems or lose money. And preferably, if it is a crypto casino, we should also use crypto because we already have a wide selection of coins to gamble with.
You're right, we are humans and prone to making series of mistakes knowingly or unknowingly, the best practice against such is abstainance, since we cannot take confidence in whatever we do to always fall under a safety control measures, a personal debit card has the details of our personal life on them and they can use that alone on devices to track our permanent address where we lived in and they perform a physical fraud operations if the digital one is giving though time.
Because we are humans, we must really take care of ourselves as well as possible by not doing things that can make or harm us. Using a debit or credit card means that we risk hacking or stealing data, and maybe hackers can take all the money on our debit or credit card. So we should avoid using these two types of cards for our own good so that we only gamble using the money we can afford.
For credit card users it is very dangerous if you can't control yourself in playing gambling, let alone being able to continue making deposits until your credit card bill reaches swelling, I think besides being unsafe it is also dangerous for people who can't control themselves in playing gambling especially people like that tend to be curious if you haven't won yet.
If OP is playing casino just to make money why shouldn't OP spend anything with a credit card instead of spending it on gambling but in the end it will make the bill swell, even though there are limits, but I think everyone agrees not suggesting credit cards let alone debit to avoid something unwanted.
The worry is that they can lose self-control while gambling which can cause the deposit amount to increase, and they cannot control their money and themselves. They have to worry if their credit card bills can swell because of deposit after deposit they make to play gambling.
OP can use or spend anything with his credit and debit cards, but he should know that linking his debit or credit card to his gambling account is not a good idea. So he'd better think about it before actually hooking up.