Desperation, regrets, etc. All these things are usual things that usually happen, and that is because we always think that every bet we make is a win. We forget that losing is also a part of gambling. It's sad to say that we always assume that gambling makes us rich, but we don't accept the fact that gambling is a win-and-lose situation.
Whatever happens, gambling never makes you happy. Even if you win, it's still impossible because of dissatisfaction. Having greed and chasing never brings a gambler fulfillment, but rather always emptiness.