Many gamblers think that when they gamble, they could go home multiplying their capital. Unfortunately, most likely what happens is that they go home empty, and this is because our gambling habit is wrong and our mindset is wrong. We can't blame the casino for our losses because, in the first place, we did not act as responsible gamblers but as irresponsible ones with uncontrolled emotions.
If the gambler goes into the casino with the intention of making a profit, they could still achieve that goal, but their chance of losing all and going home empty is highly dependent on them and how they can manage their greed.
There are cases where some gamblers can go in with little money, manage their bankroll very well, and wager in just games with little odds, not being too greedy, and still come back with a shining balance. It's possible;
There are also some who allow the greed of cheating the casino to blind them by going for high-risk games, which eventually leads them to losing everything they go in their work and go back home and empty. Such types of people are the ones making the casino owners richer.