Take a look at Linkding. Run the latest-plus version to archive pages and get reader mode features. You can use Linkdy as the Android app for it. I’m unsure about the RSS features though.

I think a separate FreshRSS container would be better for that though, and you can use ReadYou as the Android app.

Background in biology and insurance - major career transition but yes, I love self-hosting! Have about 37 services running!