Fortnite update is not working because of fortnite storage?

I would like to update fortnite but there's always not enough memory on fortnite or epicgames I have 16,36 free and need 30, iwas and if I delete something from my laptop then it does not change there how do i get there space

You probably delete too small files… 15 GB is a lot, because you have to definitely uninstall another game.

Simply delete something brings nothing if the data is too small. You also need to empty the trash.