Been around gamblers. Watched them blow paychecks, win miracles, lie about both. Professional? You will not see it on a neon sign, and you sure as hell cannot measure it by the times someone got lucky and posted a screenshot. "Responsible" gets thrown around by people who want to sound in control. Nobody is responsible all the time, not even the algorithm.

If you really want to know, a professional gambler is not some statistical anomaly. It is the person who treats risk like a craft. Grind through odds, edges, endless research. The line between thrill and disaster gets thinner. Winning? Sure, it matters, but only over thousands of repetitions, after you have developed a sixth sense for when you are the mark. The house edge is also psychology. Most "pros" do not look like winners. They look like data analysts with slightly haunted eyes. Sometimes, they look bored.