He should take a break and he should talk to people about this issue, he believes he will win to recover all his losses, he might take so many risks just to win but gambling is a game of luck.
It's more better if he doesn't have to playing gambling, especially if he can't wins the gambling games. Instead gets lose more money in gambling, that will be the best decision if he can stops gambling immediately and allocates his money to other things that will helps him to improves his lives. His risks of losing the money will be bigger if he keeps playing gambling, even if he can wins small money, that doesn't mean he can wins much money because in gambling, someone can't wins easily. He must realizes about that and needs to stops his gambling activity immediately to prevents the other losses. Take a break can be a solution to him but he must knows that take a break for a while can makes him to back to the gambling games and that can makes him playing gambling aggressively without thinks to stops playing gambling.
However chasing losses will always be a bad idea when it comes to gambling, not least because casinos apply random algorithms to every game which makes the outcome at the end of the session always unknowable, on the other hand I'm not going to say that the idea won't work because of course anything can happen if they manage to get lucky, but what we have to remember is that it's very difficult to get that good luck to reach the recovery stage or to restore all the losses you've experienced.
And it's also a nonsensical idea to chase losses where you've lost money, and we should be able to think in this direction that it was gambling that made you lose money in the first place, and it doesn't make sense to chase losses in the same place, obviously. And as you said, in the end it will most likely only increase the amount of loss and this has been proven because there are enough cases like this where chasing losses creates a much worse situation.