Malcolm Owen, AppleInsider, on optimizing your Mac storage space:
Is it worth keeping a collection of 500 photos from that trip to Paris a decade ago when you only look at one or two? Do you need gigabytes of videos of your cat?
While there are many ways to cut down the collection, you may want to take a few minutes to look at Apple’s built-in options for managing data stored on your Mac, under what Apple refers to as the Optimized Storage menu.
If you’ve not spent time with macOS Optimize Storage (Apple menu, About this Mac…, Storage tab, Manage… button, then click Optimize), take a few minutes to go through Malcolm’s walkthrough. There are a lot of options here, worth understanding the tree of possibilities.