I know there are weak episodes, some almost on purpose (like the village defense, a homage to samurai films from a simpler era), but I don't agree about The Mandalorian being bad overall because it just isn't. It delivers worldbuilding, ambience, and characters (ironically, the ones under helmets end up being more memorable than the others...); the soundtrack is insanely good, the production art alone is fantastic, and it's a miracle that it's a tv-series at all. My kids just love it in a way they've not loved any other SW material.
The only thing I would change is Gina Carano (bad actor, bad casting, and turns out she's a bad person too), but that's it.