iOS not indexing/loading

Steps to reproduce

iPhone 12 mini, on version 1.9.14, on iOS 17.6.1, syncing via iCloud drive from MacBook Pro on Sequoia 15.1.1 (no issues on macbook end)
Open app
Frequently stuck on “Loading workspace” / “Indexing vault”
Can open notes, and all I can see is the title, with none of the content, and at the top of the page “No file”
This does not happen every time, sometimes the app works with no issues

Did you follow the troubleshooting guide? [Y/N]

Yes
Yes

Expected result

See my notes and their content

Actual result

Do not see the content, only the title

Environment

Cannot provide as “Loading…” indefinitely


Additional information


Are you able to update the phone to iOS 18? I’m guessing not.

Also, how much free space does iCloud Drive have?

How much free space does the phone itself have?