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I've stopped recommending Plex to newcomers, because Jellyfin is ready for families now
(www.xda-developers.com)
Jellyfin is a free and open-source media server and suite of multimedia applications designed to organize, manage, and share digital media files to networked devices.
Bought a RPi 5 and a 16TB external drive to run Jellyfin a couple of years ago. It has been running flawlessly ever since, and has been super easy to harden and share with friends and family.
I am a big fan of Jellyfin now.