How to clean up OTHER storage

this will clean out the cruft.. make sure you know what you are doing.. https://titanium-software.fr/en/onyx.html

This is a million dollar question that drives many Mac users nuts. Apple has no good way built in to the OS to manage storage, much less files not owned by the user (ie other storage).

If you are on the device "sudo du -hd 1{path to directory}" can be used to list the volume of each sub directory. It can be used to help track down what is eating a lot of space. For example you start with "sudo du -hd 1/".

@checkmate1984 I'd recommend using OmniDiskSweeper to examine the contents of the drive and find things that could be removed: https://www.omnigroup.com/more