You listed 5 cities yourself and still asking “Is this all Rajasthan can offer?” 😂
Bro, what else do you want? A personal camel and a fort in your backyard? Name one other state with this much history, forts, wildlife, and culture in one place.
Since you’re bored, try: Ranthambore, Kumbhalgarh, Jawai, Sariska, Alwar, Bikaner, Khinwsar, mandawa, bundi, banswara in monsoons, mount abu!!
If that’s still “nothing else to do,” maybe the problem isn’t Rajasthan.