Home folder size

iCloud Drive is not off computer storage but a syncing feature. Anything on the iCloud Drive is mirrored on your Mac in Users/Home/Library/Mobile Documents folder. So you're not saving any storage space by using iCloud Drive unless you select Optimize Mac Storage. Then the savings is not immediate.

Also look in the Downloads folder for installer dmg files. Once used they can be deleted. Many users have found a couple of Gigabytes of files in their Downloads folder which are no longer needed. 

Betty Two wrote:

My Home folder is huge but contents listed are small... why?

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