who are other users?

If it does say “Other users”, anot “Other”, then it’s possible that the content in question is under the “Shared” folder.

You can reach it in the Finder by first pressing Command-Shift-H to open your home folder; then press Command-UpArrow to move one level up. Then you will see Shared and, possibly, the home folders of other user accounts if they exist. If there is only your own user home and the Shared folder: select Shared and press Command-I to open its Info window. It tells you how much space it’s using. Then open Shared and see what is inside.

it does not say Other Users, it says OTHER.

This is how you can find the largest items and decide whether they should stay or go:

What is “Other” storage on a Mac, and how… - Apple Community

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Follow previous advise - First

User wrote " Marbook Pro MacmOS 13.1 "

The Current version is now Ventura 13.5

It usually a good idea to not let the computer fall too far behind in the updates

There are many Bug and Security updates that should be installed to make the computer function better and to Secure the computer from harmful Bad Actors Software and websites

Keep your Mac up to date - Apple Support (CA)

About the security content of macOS Ventura 13.5 - Apple Support (CA)