Even without any logs, 99 times out of 100, this is a matter of not using the necessary naming and organization convention, and not making sure that your organization aligns with your configured metadata sources.
Make sure you're following the conventions here: https://jellyfin.org/docs/general/server/media/shows/
And also here: https://jellyfin.org/docs/general/server/media/movies
Make sure you're following the conventions here: https://jellyfin.org/docs/general/server/media/shows/
And also here: https://jellyfin.org/docs/general/server/media/movies