I got started with RSS using a TUI program on unix, whose name I forget. But then Google came out with Reader (and Listen for podcasts). When they lost interest and dropped them, I exported my OPML and switched to apps I could find on f-droid. Now I back up my OPML scrupulously and am currently happy with Feeder and Antennapod; Google taught me I didn't want to depend on someone else's server for something like this; it's too important. If ever I find I want some feature that requires a server, I'll self-host something (Nextcloud?), but I seem to be well enough served by purely local clients.