Install xdiskusage by entering the following commands in the terminal:
sudo apt update sudo apt install xdiskusage
Description:
Displays a graphic of your disk usage with du
xdiskusage is a user-friendly program to show you what is using up all your disk space. It is based on the design of the "xdu" program written by Phillip C. Dykstra. Changes have been made so it runs "du" for you, and can display the free space left on the disk, and produce a PostScript version of the display.
Homepage: http://xdiskusage.sourceforge.net/
Version: 1.48-10.1build1
Section: universe/x11