Gambling as a game of luck involved the winning of the most lucky gambler and not the skills required from the gambling that enable the winnings. Gamble with more efforts could yield more results from the game. Loses in gambling made a gambler a destitute.
To win in gambling only with luck you should be like Domino from the Deadpool movie 
Skills and knowledges and experience are definitely welcomed here. WWhen you know all the rules, all possible results, can calculate cards or other things your chances are much higher than at any "lucky" newbie.