Nintendo first party titles are very stingy with sales. Many third party titles however, go on some pretty good sales with decent regularity. You might also want to make a Japan/Hong Kong/Singapore account to grab Asia-exclusive games sometimes, if those interest you.
As for the games I own and would recommend, there’s:
-BOTW
-Metroid Dread -Dead Cells
-Hollow Knight
-Crimzon Clover: World EXplosion
-Burnout Paradise
-Fast RMX
-Monster Hunter Generations Ultimate (or Rise)
-Atelier Ryza (or Sophie)
-Mario Kart
Just some general, off the top of my head recommendations. If you want recommendations of specific genres, I might be able to recommend further.