...//::Is your success as a gambler always determined by your luck or experience?...
Well, player is measured statistically, then that percentage is directly linked to your winnings or losses, hence, experience does not make you a winner and luck does not make you a loser: and vice versa.
A player of traditional games in a casino, seeks to put hit the variance at some point with a large multiplier. And he maintains a bankroll that allows him to support that idea.
A skilled player who plays tournaments in Poker, for example, only needs to know that if he is good, with an ITM of 30%-40% he will be successful.