If you don't know the Linux tool ncdu, this will make your day.
The tool by default scans from where you are or any directory you specify.
Specially when running on WSL you might want to use excludes.
On top there is a delete option, which can be quite helpful when you find large files you don't need.
I am using it for years and it did safe my IT life more than once. And it is very fast...
This is a companion discussion topic for the original entry at https://blog.nashcom.de/nashcomblog.nsf/dx/how-to-find-out-what-is-eating-my-disk-space-on-linux.htm