Building a list of RSS feeds takes time. I find that when I stumble across a new site (regardless of how I got there), I poke around to see if the content is interesting. If so, I seek out an RSS feed for it.
Note there are ways to get an RSS feed from some sites without them (RSS-Bridge[0] is what I use), but the experience is much better if the site natively produces one.
In time, you'll find yourself with hundreds of feeds on a variety of topics.
Re:It’s Time to Get Back to RSS
by reanimated on Sunday May 24, 2020 @10:59AM
(#23291953)
Last month Inoreader introduced this feature too:
https://blog.inoreader.com/2020/04/convert-almost-any-webpag...
You might like Baldur Bjarnason's link blog: https://notes.baldurbjarnason.com/
He always seems to have interesting links to good blog posts.
As someone getting into RSS more recently, I've definitely struggled to find decent sites to follow (though trawling hackernews totally helps:)).