I want to be absolutely certain that my Mac won't delete any local data. Not documents, not movies, not music. Nothing.
If I leave a 900MB file sitting around for six months or six years and my drive is 98% full, I want that data to remain on the SSD that is physically inside my laptop.
Zero automation. Like it's 2003.
Also, I don't want any data uploaded to iCloud unless I specifically and intentionally decide to upload it. By default, for all data I want only one (1) copy to exist in the entire universe. (I might make exceptions, but I'll decide that on a file-by-file basis as needed.)
(However, I do need to be logged in to iCloud for some things, so just turning off iCloud won't work.)
How can I accomplish that?
I found the dialog below, but the options are ambiguous.
It isn't clear to me what unchecking those boxes and then clicking "store in iCloud" will do. Because what I'm trying to do is not store in iCloud. Where is the option for that?