This is the case where crime rates in gambling somehow increase, that is because many people lend money to gamblers that sometimes falls to be lost because instead of winning back their lost, the money they borrow lost as well. So in this concept, I highly believe that helping a person who lost in gambling isn't worthy, but to teach them with concepts of gambling for them to increase their winning rate is more productive. This will create time frame for them to play again soon, and to probably avoid being addicted.
If someone is in debt then advising him to involve into gambling activities is not a good suggestion to be honest.
Insteaad of teaching about winning rewards later,better teach them about how gambling works and its not possible for anyone to get assurance of winning in gambling.