You can't always push it to luck by acting like a fool yourself. Because we know that Dice, Slots won't win us every time so we can't get entry by placing big bet every time. So we have to have skill along with luck. And if we have to bet wisely then luck and skill will help us to win. So we cannot say that winning in gambling always depends on luck and not on skill. You can never do well in gambling by leaving everything to luck alone. You will need both experience and luck
Luck alone makes you lazy, and probably nonchalant with your picks, you don't make rational pick because you are hoping to just be lucky. But with skills you become definite with your picks and try to get understanding about the dynamics of the game and make only informed picks on which you place your bets. After proper incorporation of your knee via your skill, you allow luck take it's place as probably 50/50 percentage for both of them. A good combination of both gets you a very good result.