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Avoid machines
While there is no surefire way to win at the casino, there is a surefire way to lose. Try to avoid slot machines and other machine-based games. They are designed to make the casinos the most amount of money possible, both by rarely, if ever, giving out jackpots, and also by capturing your attention so you sink more and more money for "just one more game" because you "almost had it last time". Games like poker give you a higher chance of winning based on your skill level, whereas with a slot machine, there is none involved.
