I've just released new version of the RSS Feed extension (a long time abandonware). Extension was a full rewritten for modern GNOME (46–50) with a redesigned UI, two layout modes, native notifications, and drag-and-drop feed management.
I originally wrote this extension back in 2015 and handed it off to a maintainer. A decade later, I decided to come back and rebuild it from scratch for modern GNOME. I'm currently waiting for the EGO admins to transfer ownership so I can submit it, and I hope the review goes well.
if you want meantime try this extension, here is GitHub page:
https://github.com/todevelopers/gnome-shell-extension-rss-feed
I will be glad for any feedback from you. More features I would like to add after this version will be released.