I've recently gotten a new computer (16" base model with 8GB GPU), and its 500GB of storage had dropped to just 80 when I checked it. Here's the screenshot:

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/FlPNf.png

I've checked through all my folders, and adding all the items in (from the above window) Documents -> File Browser, as well as every other unique item in the sidebar, comes to roughly 445GB. So all my files take up less than half of my storage space, while this Other takes up nearly the rest! I am unable to work productively (recording videos) as I have no room to store them. Where can I find out *what* this is, and *how* to delete/remove/edit its contents? This problem didn't occur on my other computer (also running Catalina).