A Raspberry Pi is a decent self-hosting server if you're careful about what services you host. Unfortunately, Plex's default settings tend to be too much for even a Raspberry Pi 5 to handle.
Raspberry Pi-based Plex servers look like a DIY-friendly, low-power way to build a compact Plex server. They're readily available, easy to work with, and have fantastic community support.
Four lightweight services deliver password management, file tools, PDF edits and DNS filtering minus paid subscriptions.