Plex - Kodi - Trailers for the movie - not general trailers

Hey
I almost skipped Kodi, but i´m really missing the feature from KODI, finding a youtube/IMDB-trailer.
In KODI you can under "information " for a movie, choose to watch the trailer - the specific trailer for the specific movie.
By reading a lot in this forum, it is very problematic to se a specific trailer - you simply must download it put it in a directory with the movie - - -
Ooooh God, i have over 3000 movies in High def. onm 28Tb and series on 21Tb - - it looks like a bad dream - and i wont . . so now i wonder if i really want to use PLEX…

sny ideas
(Sorry for my english)

If Plex can “match” your file to a particular movie, you will get trailers and extras for it automatically.

So, make sure that your file names are in a state so Plex can recognise which movie it is.
https://support.plex.tv/hc/en-us/articles/200381023-Naming-Movie-files

Then Plex will get the extras automatically and you can play them, right from the preplay screen of a movie.
https://support.plex.tv/hc/en-us/articles/202934883-Cinema-Trailers-Extras