Static routing is like using a map to go somewhere you want to go, except that the map stays the same and doesn't change even if there's a different way to go.
Imagine you want to go to your friend's house that's on the other side of the city. You can use your map to figure out the best way to get there, like which roads to take and where to turn.
With static routing, you would tell your device (like your phone or computer) which route to take to get to your friend's house, and it would always follow that same route even if there were other ways you could take.
It's like giving your device a set of directions that it will always follow until you tell it to use a different one. It's good for situations where you know exactly where you need to go and there won't be any changes to the route.
However, if something changes on the map (like a road being closed), your device won't know and it will keep trying to follow the same route even if it's not possible anymore. That's why for more complex situations, like in big companies or cities, dynamic routing is often used instead.