Newsboat is my current RRS reader of choice. It’s terminal based and has great support for services like TTRSS.
Also, just FYI, I’m a contributor to neonmodem and we have an open enhancement request in the queue to add RSS support. I’m currently focused on improving usability of the current feature set and improving the lemmy support for it but I also want to use it for RSS so it’s something that I definitely plan to add if someone doesn’t do it before I get to it. No idea when I’ll have time but just know that it’s on the radar.