As a preface I am using Ubuntu with WSL.
I have been having trouble lately trying to figure out how exactly to clear disk space that is being taken up by a hard drive called ext4.vhdx stored in CanonicalGroupLimitedUbuntu.../LocalState.
Screenshot of Windirstat visualization:
When I check Ubuntu to see how much storage is being used with ncdu it shows only 323.6 MB of storage are being used. However, when I run df it shows me a ton of filesystems that are taking up almost 99% of their allocated space.
Screenshot of df output:
Are these filesystems what are causing my storage to be full and is there anything I can do to fix this?

