I agree they were great. If you're not much of a movie watcher you might not have picked up on how much of the show was a loving homage to and retelling of classic US and Italian Westerns as well as the Japanese samurai movies of Akira Kurosawa. If you liked the Mandalorian try Ford's" The Searchers", Peckinpah's "Wild Bunch", Leone's "The Good, the Bad, and the Ugly" and above all Kurosawa's "Seven Samurai" (possibly the most influential action movie of all time).
If you are looking for another good sci-fi series I highly recommend "The Expanse"