There are allot of smarts way to gamble but maybe you mean not smart way to gamble but
the best way to earn money from gambling. The best game to play is poker that is because you can think about every step your self.
So you can deside if you want to play or if you want to fold.
more to this is card game sin general
cuz you can follow cards or count them
but this is still no the best way i mean you have or you dont have luck