Another Other folder on Mac question

How do I delete/remove files from the 'Other' Folder on a MacBook? I have read other topics and cannot seem get a good answer.

The Other folder appears to be different from System folder. I want to update to macOS 10.15.6 but I need 19.97gb of space.

I can see that the Library/Updates folder takes up 14.4gb. This folder contains MacOS Update Combo files which I cannot delete or use. I downloaded Omnisweeper but it did not help.

Other than photos, apps, documents, music and system I am not sure why the Other category is so big. Please help