An individual sport is when you play a game or compete all by yourself. It's like when you ride your bike or run around the backyard. You don't need anyone else to play with you, you can have fun all on your own.
Some grown-ups like to play individual sports too. They might play tennis, golf, or swim. When they play these sports, they don't need to be on a team, they can do it all by themselves. It's like they're their own team!
But just because they don't have anyone on their team with them, it doesn't mean they don't have rules to follow. They still need to know how to play the game and do it safely.
Playing individual sports is a great way to have fun and stay active all on your own.