I'm self-hosting FreshRSS [1] with Docker on a Hetzner VM. Fast, clutter-free, has everything I need.
[1] https://freshrss.org/index.html
Edit: typo
[1] https://freshrss.org/index.html
Edit: typo
The result is that there is no need for persistent storage, so its real easy to host. If you're interested, its here: https://github.com/lukasknuth/briefly
Installed freshRSS in 1 min with softaculous
You could just subscribe to the same feeds from multiple devices/apps, but then you have to manually keep track of what's already been read and that will quickly get out of hand.
If I read from my mobile using NetNewsWire and then go on my laptop and read with the FreshRSS web client, I don't need to wade through a bunch of articles I already read.