Problem gambling is when people start playing games like bingo or betting on sports but then they get addicted to it. It's like playing with toys that make you happy, but you keep playing and playing until you forget other things that make you happy, like playing with friends or having fun outside.
Just like how some people drink too much soda or eat too many sweets, some people gamble too much because it makes them feel good. But just like with too much soda or sweets, too much gambling can be bad for you. It can make you lose all your money and make you feel sad and alone.
Problem gambling is when a person can't stop gambling even if they know it's not good for them. It's like a tug-of-war between their brain that tells them to keep playing and their feelings that tell them to stop. But the brain usually wins, and the person keeps playing even though they know they shouldn't.
If you ever feel like it's hard to stop playing games or betting on things, it's important to talk to someone about it. That way they can help you find other fun things to do that won't make you feel like you have to keep doing it all the time.