631
I Ditched the Algorithm for RSS - and You Should Too
(joeyehand.com)
This is a most excellent place for technology news and articles.
For iOS, this one doesn't collect any data. It's pretty barebones, but also free. It nags you a bunch at first but eventually stopped
https://apps.apple.com/us/app/rss-news-ticker/id1548190121
NetNewsWire is the iOS and macOS app for RSS. It has been around since RSS started out and is now open source.
It doesn't have keyword filters or at least I can't find them.