‘Download and Keep Originals’ can’t be found

So I turned off iCloud Photos and I have less than 30 days to re-download the photos from my old phone (6s+) (which has been reset so the originals from the 6s+ are all gone forever) onto my current phone (XR).

However, I’m supposed to select ‘Download and Keep Originals’ in Settings > Name > iCloud > Photos but it’s not even there - there’s no option that says ‘Download and Keep Originals’ but when I turned off iCloud Photos, Apple emailed me and said I needed to turn that on. I don’t understand why it isn’t in my settings at all, even when I search in the search bar. I need it to be able to resave all of my old photos and videos but without it, they’ll be deleted, and I can’t turn iCloud Photos back on due to low storage.

Why isn’t the ‘Download and Keep Originals’ button there?