Here are 4 of the worst mistakes that gamblers make at the casino. Eliminate these mistakes, and concentrate on the casino games with the highest RTP to win some money. The Slot Machine Curse The worst curse on gamblers is the slot machine. More gamblers do play slot machines than any other game, slot games are specially designed to drain your bankroll, and they hardly ever fail at that task. You can technically win when you play slots over the course…