We usually play bets depending on skill, luck, gambling is always possible to win based on these two. If you don't have luck you will never win at gambling because in many games I gamble for sure but I lose because I don't have that luck. So sometimes it is possible to win at gambling using strategy if there is luck, but currently the luckiest people win the most money from gambling.
Well I believe it depends on the game as there may be some exceptions to this theory, I believe there are games that solely depends on the gambler’s skill, strategy and experience to win, games such as card games, poker to be specific, with or without luck, as long as you’ve got the skill, the experience and strategy to be able to predict your opponent’s moves and sort out ways to counter those moves, I believe you’ll be victorious and still win.
Even if luck is needed in the aspect of gambling, it’ll be very little. You’ll only say you’re lucky when your opponent makes a very costly mistake that will contribute to you winning with ease, then we can say that you’re lucky, but most of the times, your skills are what guarantees your victory.