Your advice and suggestion is very risky, as we all know that many of the community who tried in gambling site to invest in, they're end up of crying because they've loss money in it. And being a good and expert trader quitting is not their true characteristics, because we have saying that quitter always a loser and winner always win.
Probably, they just invested into a non reputable gambling site, there are a lot of gambling sites here who runs profitable until now and they are in the business for many years already. Just do remember that gambling sites win in the long run and that makes them profitable, we need to mature with the reality so we will not be afraid of putting our money to it.