Everything is luck man, no math no shit
Most of them depends upon your luck and only lucky people get those jackpot. Few games do exists where you require a good experience and skills to win those gambling else like roulette, computer slot machines etc are the luck based games.
There's no math formula could make you always win steadily, the only reliable math you can use as reference in gambling are when a lot of math experts says that no chance for you to win against the house, the odds created to beat players in the long run , that's how the real math work.