There is no such thing as every person winning in gambling, all games have profit and loss. Because you see the old gamblers are mostly the ones who complete more experience and succeed, but the only new gamblers are the ones most people face. Because those who are more experienced always win but sometimes they can't win when addiction happens. Basically gambling depends on addiction, the more addicted a person is the more losses they face. And many new gamblers who are not fully experienced are currently becoming experienced, but it is not possible for every gambler to be experienced because there are many stupid gamblers.
There are still winners, however more often they experience losses because basically gambling is a game of chance that is intended for people who dare to take risks and want to test how much luck they get, not only for experienced gamblers. Of course, even new gamblers can win if they are lucky, but experienced gamblers already understand the strategy they are playing so sometimes they can win more often depending on their skills, especially in mathematics or sports, and those who are experienced play skill-based gambling.
It is true that if an experienced person has experienced an addiction, the experienced person experiences more losses than wins, therefore, as a new gambler, you should not be careless by making careless bets and following experienced people, they must learn many things to avoid bad things that will happen they experience gambling, especially if they are too happy and end up becoming addicted and end up making stupid bets where they always experience a lot of losses.