I'm not sure mathematics can affect the victory of a gambling. I am more sure if a gambler makes more practices on his or her skills and being good at playing a gambling trick, then a greater victory may become hers or his.
I don't think either that skills could help you in gambling because as far as I know, gambling is still more of luck than skills. Well, skills could help you on some games in gambling, like poker and gambling prediction, but in the end, you could see that luck is still the one you need in gambling. If you are playing gambling thinking of a way where you could earn profits, and too desperate to win, well sad to say but you are just going to lose your money.
I agree. I play poker, NL Hold'em namely, on a level above average, but if luck is not on your side you really can't do much. For example if you have two Aces on pre-flop and some player who's always bluffing goes all-in, you go all-in too, and technically you are right, especially when you see his cards, 7 and 8 not suited. But if there are no Aces then and two 7s, you lose because you have Two Pair and he has Three of a Kind.
No, math can't help you to win in gambling. If it was the case all mathematicians would be the richest men on Earth.