For sure the percentage of gamblers that records more winning than losses are very minimal and are also patient gamblers because when they play and lose they will wait for some time or even the next day before they continue but some desperate gamblers will continue till they've exhausted all their money but notwithstanding, it doesn't really mean they can make gambling their career as there are other works or jobs they do that fetch them reasonable amount of money then they use gambling as fun and they start recording more winning than losses.
More gamblers experience losses than wins. That is clear and certain because gambling requires luck and analysis if they bet on sports betting. They can't win if they don't have those things, so even if they use more money, they will still lose and won't be able to win. Many gamblers are discouraged because they experience a lot of losses, and it is their own fault that they cannot determine how long they gamble until they have experienced a lot of losses. That is why people have to forget about their intention to build a career from gambling because it is not easy and requires a lot of things before they can make money from gambling.
They should look for a job that can pay them so they can build a career and have a steady income source rather than looking for it through gambling. Most people will just fail to make money and also build a career in gambling, so those who haven't started yet should be able to think straight and don't need to try.