Taking a loan for gambling is never reasonable, rather it is a big mistake, why do people usually take a loan? Only when they have a very important need, they will take a loan, but taking a loan for gambling is never reasonable, because gambling is a game of luck and there are usually negative results here, so in this case, gambling with a loan means that you are giving excessive importance to gambling, which is never a good decision, if you take a loan for gambling, you will have to face bigger problems because if you lose then you will not be able to repay your loan, then think about your situation.
There are many reasons why there are some gamblers who are taking a loan just to gamble.
They want to chase their losses, they want to fulfill their urge to gamble despite losing multiple times, they see gambling as a very important thing to them that they will take a loan for it, and many more.
Taking a loan isn't recommended, but it isn't prohibited as well. Yes, it's not reasonable but unfortunately, there are many who are still doing it because of the reasons I said above. Intelligent gamblers out there know that this action will just add to the problems of the gambler. On the other hand though, I still believe that there are still a few gamblers out there that are considered "LUCKIEST OF THEM ALL" where they took a loan hoping that they'll win and they really win. I know it's pretty rare, but not impossible, right?

If you don't have your own money to gamble, don't take out a loan, and just don't gamble at all.