Hate to say it, but Docker compose is giving you the best flexibility and portability of your files. Any of those services can decide tomorrow to enshittify their services and you will be left with nothing.

Look at Plex, now they require Plex pass to stream your own content.

Why don’t you do some bash scripting and route files to different buckets depending on their extensions or mime types? You can easily do that with rclone for example.