The flash drive on my MacBook has 121 GB capacity. "Other" which is greyed out where you manage storage is 61.45GB which is more 50%. How does oe clean this up to free space?

DRHN wrote:

The flash drive on my MacBook has 121 GB capacity. "Other" which is greyed out where you manage storage is 61.45GB which is more 50%. How does oe clean this up to free space?

Empty your Trash — Delete files and folders on Mac - Apple Support

https://support.apple.com/guide/mac-help/delete-files-and-folders-on-mac-mchlp1093/mac

How to free up storage space on your Mac - Apple Support

https://support.apple.com/en-us/HT206996

See used and available storage space on your Mac

https://support.apple.com/guide/system-information/see-available-storage-space-syspf9b375b9/10.14/mac/10.15

User tip: "Other and What Can I Do About It ?"

https://discussions.apple.com/docs/DOC-5142

Try something like OmniDiskSweeper for a GUI to get a good look at itemized file size and location:

OmniDiskSweeper http://www.omnigroup.com/more

Thin local snapshots :

ref: https://eclecticlight.co/2020/04/09/where-did-all-that-free-space-go-on-my-apfs-disk/