Individual mobility is when you can move around by yourself, like walking or riding a bike. It means you don't have to rely on someone else to take you from one place to another.
Think of it like playing a game where you have to move from one spot to the other, and you get to choose how you want to do it. Maybe you can walk or run, or maybe you have a bike, scooter, or rollerblades.
Having individual mobility means you have the freedom and ability to move around and explore different places on your own. It's like having your own personal superpower to go wherever you want, whenever you want.