RSS feed is simple and awesome idea. I run a rss server and sync feeds locally using #fluentreader app and today I learned there is lite version for Android
Named #FluentReaderLite but it is not available in #fdroid we have to download manually so I used #obtainium to install it

https://github.com/yang991178/fluent-reader-lite

Another good option is #readyou android app which is available in fdroid

https://f-droid.org/packages/me.ash.reader/