Wrong covers

Dear Community,

I've recently installed an instance of LibreElec on a RPi4 and am pretty much enjoying it! However, I also found that Kodi often grabs the wrong covers for the video files, resulting in absolutely hilarious covers to be displayed. Kodi is using the default "The Movie Database Python" module to grab the covers, but I don't know which data is used to request the database.

I always rename the video files, removing all "_HD_by_KJHJGUY" from the name, and sometimes rename the whole to display the French movie title. Could this be the reason for the module using the wrong covers? Do I simply need to use another database (more French-compliant)?

Thanks in advance for any help!