I will preface this with I only use it’s web interface so I’m unsure of an app and you can judge from the image on their site if it is modern enough for you. I’d describe it as simple overall but it does have dark themes.

I’ve overall had a good experience with freshrss and their docker container https://hub.docker.com/r/freshrss/freshrss.

https://freshrss.org/

Presumably he’d be happy to produce a numbered list with details and just share it around. What could go wrong?