Fixing Metadata for an Anime

[elephantLYFE]

I'm not familiar with using the family of arr software.
Maybe you can re-explain your specific goal(s)?
Are you trying to maintain file names,
that appease requirements all of Jellyfin, UsersChoiceOfAnimeAPI, & Sonarr? At the same time?

When i have issue with any movie/show, first thing I do is check that file naming convention,
adheres to the documentation. https://jellyfin.org/docs/general/server/media/shows/

I would remove the media to another directory.
Clean up the file names. Delete NFO & Artwork.
Double check folder structure.
After Jellyfin has had time to acknowledge the previous media removal,
Re-import to Jellyfin.

If I still have issue with incorrect metadata,
I double check DB i pull from, and check for DVD/AIR order, JAP vs. USA air order, etc.
(good example often asked is the Cowboy Bebop, which is often resolved by reorder by DVD order)

I could be wrong, but the first thing that jumps out at me is the "[]" at the beginning,
and the many many '-' & '_', and the lack of SXXEXX convention for Season & Episode.
I think in the past i have used "Bulk File Renamer", when cleaning up filenames in mass.
https://www.bulkrenameutility.co.uk/