Apple lets you use Time Machine to create a backup from your Mac of all the data files, apps, and other stuff that’s not part of the macOS system installation. (Before macOS 11 Big Sur, you could back ...
I decided that I do not use Time Machine enough to justify the space it occupies. So, I went in the TM preferences, I deselected my external drive that was being used by TM and I turned TM off ...