My advice is as much as possible never to borrow money to gamble unless it is borrowed for something else that might be more productive, even if you are pressured because you lose gambling, don't ever follow those emotions and passions, obviously that will lead us to bad behavior as gamblers, that's clear it will hurt ourselves later if we fail to pay it.
Lots of people end up in tragedy once they lose the money that they got from loans because that's when the time they realize they don't have anything anymore and they still have to pay for it. I once watched in the news that a man lost in a casino and brought some guns with him there and shot everyone randomly. This is what happens when you don't really care about playing with the money you borrow from others and don't have any means to pay it back once it is lost. That's why in order to be safe from such tragedy you need to consider the consequences.