blackjack gives the best chances of winning in my opinion and because of that it is most favorite game as it involves some skill not only luck
Off course it need to some skills but at the end if you want to win every time in any kind of games one must be lucky so either gambling or any sports if you play very regularly you will lose some times. But in gambling if you lose regularly then at the end you not have any thing to lose so I don't ever gamble to make a big profits from gambling.
But many people are making good profit from gambling after making them themselves as professional gamblers. So there are a lot of chances for continuous losses as well as continuous profits. So the probability of winning is not only based on luck but also based on our skill set too.