The 3DS has provided us with many fantastic RPG's, frankly too many to list, but these are a few of the real standouts. While the Switch is the best of both worlds, if any of these games have grabbed your interest feel free to dust off your 3DS and pick up a few. They're all relatively inexpensive at this point and can provide you an entry into a franchise you never even knew you loved. Like Shin Megami Tensei.
Did I miss one of your favorites? Do you want to tell me about how Monster Hunter isn't an RPG? Leave a comment and let me know!