Nintendo makes really, really good games that are very fun, but feel like they could have spent more time making more content for them. It won't stop me from playing them, but when you spend like $40+ you want more than 15~ hours on a game. But for your purposes, that might be perfect, so you'd only need like a handful of sessions to beat them.
BOTW and TOTK are LONG. Good, but know that you'll spend loads of time playing them. I put like 150 and 170 hours in each.
Shorter but fun games:
- Kirby and the Forgotten Land
- Luigi's Mansion 3
- Pikmin 3 (and 4)
- The Legend of Zelda: Link's Awakening
- Donkey Kong Country: Tropical Freeze
- Mario Odyssey (could be as short or as long as you want it to be)
Games available on Switch but also other consoles that you might have already played:
- Hollow Knight
- Hades
- Ori and the Blind Forest
- Ori and Will of the Wisps