Even those who are called professional gamblers certainly don't mean they can win with every gamble they make, I doubt that. If there are people who can win consistently with every gamble they make, I think it's no longer about luck, but rather skill, but basically any gambling involves luck.
It'll be difficult for a gambler to be an expert in terms of predicting accurate results consistently. However, most people who believe such talks from other gamblers about experts who are able to win game consistently, end up trying to become such experts as well. That's why many amongst them forcefully wants to win a game by having no limits to their gambling habit. Moreover, gambling as a lucky game isn't a wrong perspective. The analysis and decision making is also an important skill in gambling. Which doesn't need to be based on luck, it's just some few knowledge required of gamblers to help them escape addiction. Luck occurs once a while, but players could be tricked into accepting the fact that gambling luck shows up when we forcefully want to win, against all odds.
luck does come and happens only occasionally, and luck can determine our gambling, if luck is on our side then the gambling we do can result in a win, the good thing is if we are very lucky we can get a big win even if we use a small bet amount, this must be taken into account , because in my opinion all games that are said to be gambling involve luck. because there are people who think they can win by forcing themselves to continue gambling, but that doesn't guarantee they can win.