Yup, there are gamblers who become desperate thinking that the strategy that they've got will bring decent amount of money, as even they already suffering from series of loses they will insist and will keep that strategy, they've got that hope inside them that in anyhow it will work and it will somehow bring that win that they are aiming.
It's basically like a gambling fallacy where they believe that what they're doing is right and that when they do it consistently, it will give them a win. This kind of thinking is what makes many gamblers become big losers, because their beliefs and emotions make them not think logically, and it will directly affect their lives whether it is financial problems, addiction, or excessive stress due to losses and their goals that are not achieved no matter how hard they try.