There is nothing that could be spill out when it comes to gambling because there isn't really a safe method towards it and there is no secret behind it every site has a random codes and you can never really know when the good number show up because every gambling sites lets you win and lose by chance it is your luck that is doing it all.
Game of chances are definitely no good at all to be considered as a safe method. Poker where you must have some skill, if you are truly skillful can be considered as a safe way to gamble, but still its a gamble in which you have more chances to win rather than roulette for example.
But gambling is still need you luck to win it, even if you are playing poker or sports betting there are some situation there that will mostly need your luck and that is the truth every gambling method will surely need it!
No matter how good you are in poker, if your cards are really really bad and your opponents have good cards, then surely you will lose. Gambling doesn't depend solely in luck nor in skills. Gambling depends on both of them. It's like 70% luck and 30% skills. Even if you lack skills or even if you're not a hustler, if you've got a pretty set of cards, or if you have rolled a good number in dice, then surely you will win. If you do have skills at the same time, then you can earn much more than you can when you're just depending on luck.
but in poker not everything is about the card you get, it is about how you play your opponent and many times it happens to be more about manipulation and your poker face that lets you win big in total. it doesn't matter if you lose a couple of hands before that.