To be blunt: yes.
It always depends of course what kind of content you have.
If these are all private videos, then the current situation won’t improve much.
If these are regular movies and TV series, then you can improve the experience drastically - with some work (and perhaps some additional software tools to make this task less daunting).
You need to separate your media types into different folders on disk.
Then create different libraries for each media type.
https://support.plex.tv/articles/200264746-quick-start-step-by-step-guides/
Naming and organizing movies:
https://support.plex.tv/articles/200381023-naming-movie-files/
Naming TV series:
https://support.plex.tv/articles/200220687-naming-series-season-based-tv-shows/
Filebot (the above mentioned ‘additional software’):
