default nfo saved location

[Phrenemy]

I guess on a practical level, is it best to generate/create my own nfo files for my files or does Jellyfin provide a starting point for nfo metadata?

I adjusted the following in one of my libraries for a test:

DASHBOARD>LIBRARIES>LIBRARY>"manage library">
under "Metadata savers" 
CHECKED BOX "Nfo"
"Pick the file formats to use when saving your metadata"
I rescanned the library exchanging the metadata and I can't find nfo files.

My hope was to generate nfo files for my libraries from the existing metadata that Jellyfin has stored already, if necessary move these nfo files to their respective individual show/movie folders, and edit them to fix/add any data I felt wasn't working well.
Did I assume incorrectly that these nfo files are suppose to be generated for the purpose of easy editing or are they saved in a format and/or location not easily accessible?
Sorry if this is long, I'm trying to track down where I've assumed something wrong.

I'm running Jellyfin 10.8.13 on Win11 x64,
I've looked in the usual places.

The only place I found nfo files was:
C:\ProgramData\Jellyfin\Server\artists
and these nfos seem to only be referencing music.

thank you.