I got a Switch for Christmas, and I've really been loving it so far. I only have three games for it at the time I am posting this (which are Super Mario Odyssey, Mario Kart 8 Deluxe, and Sonic Mania), but they are very enjoyable games. I always say that quality beats quantity.
And oh man, don't even get me started on how much I love Odyssey. I won't spoil anything because there are lots of great secrets and surprises, but if you have a Switch or are planning on getting one, it is a must own. Trust me, you will not be disappointed. It brings back memories of Mario 64 and Sunshine, but at the same time it's unlike any Mario game you've ever played.
And Mania is great as well. If you like the classic Sonic games for the Genesis, you will love Mania. It has both reimagined classic zones like Green Hill and Chemical Plant, and new zones like Studiopolis and Mirage Saloon.
BTW, I still have yet to try Breath of the Wild, but I've heard that's an amazing game as well, so I'll have to check it out.