Plex Documentation → Your Media → Naming & Organizing Your Movie Files
Follow Plex naming and organization guidelines.
Given your directory structure, add the English folder to the Plex library (not the individual movie folders).
You should also clean up naming as you did with Bolt.
After renaming & reorganizing, you may need to Plex Dance the movie. That will remove any incorrect matching information from the Plex Media Server database.
/cifs/Multimedia/Animation/English <-- folder added to Plex movie library
../Angela's Christmas (2017) <-- movie_name (year)
..../Angela's Christmas (2017).mkv
../Bolt (2008)
..../Bolt (2008).mkv
Using the above structure and naming, Angela’s Christmas matched immediately on my system.
