No matter what the strategy is, if you don't have luck, you will not have a chance to win the games.
Luck matters but we should not think that it's only the sole factor that is needed in order to win in gambling.
We keep learning to improve our strategy so we will eventually become consistent with what we are doing and that it would be able to bring us some wins.
Gambling is a game of luck if what we are referring are luck based games,.. hopefully a gambler would see the difference.