I do not relate luck to gambling because it is so much evident that the games and odds in gambling (but odds betting) are programmed in a way that gamblers will eventually lose. Gamble more and lose is the reality. Win and do not gamble for that time wise decision. Also with the little amount of money I am using to gamble, it is like that because there is nothing like luck to me in gambling. Most people will lose while 1 out of thousands of people would win which are the lucky ones. I am not saying there is no lock in gambling but understand what I mean.
You can't relate luck to gambling 100%, but you can't take luck out of gambling either. You do your research, especially for sports betting, to know which team is stronger, their current stats, and what to bet on, so you can make better decisions. But sometimes, it's just luck.
You predict game scores, and your prediction comes true, helping you win, there's a luck factor. You see people winning jackpots of 1000x their bet, it's luck. If it was 0% luck and 100% strategy, or even 90% strategy, then many gamblers would have a blueprint for gambling, and losses would be low.
But seeing the luck factor seem dominant, following your intuition because there's an automated systems built to prevent wins, you realize luck is there. When someone wins against the system, it's luck. You can't say it's a certain strategy, or else there wouldn't have been losing streaks.