There are a few games on Switch that I more than highly recommend.
1) Goblin Sword
2) The Way
3) Blasphemous
4) Warlocks 2: God Slayers
5) Tiny Barbarians
6) Thief Simulator
7) Titan Quest
Goblin Sword is one of the absolute best games you could ever get. It's a side scroller, but so much fun. I've logged probably more than 100 hours since I bought it and will log many more until I have cleared every area.
The Way is another side scroller, but is sci-fi. It's more difficult and trying to figure out things in it, can be really frustrating. But when you figure out what the hell you're supposed to be doing and where you're supposed to go, it's such a rewarding feeling.
Those are my top two recommendations. The others I have listed are amazing games as well, but I prefer those two. Also, if you haven't picked it up yet, I recommend getting Zelda: Links Awakening. I've played it since I was a kid on GameBoy, and when it was remastered for Switch I was blown away. There are so many addons, and upgrades, but the story is still the same. It's definitely worth it. If you're into Final Fantasy, I bought a FF7/FF8 dual game cartridge last year. It has the FF8 remaster, but the FF7 is still the original PS1 graphics. But still, it has both games. My girl is a FF7 nut, and I'm a FF8 nut, so it worked out well for both of us.
I recently bought Skyrim for Switch as well. I tried playing it on my PS3 originally but it was so buggy it more than pissed me off. So I got it on a much newer system hoping they had fixed the majority of the bugs, and so far it seems they have. So if you're into that, I recommend getting it as well.
I can't comment on Xbox, because I'm not a fan of Xbox. I do have a couple games, but can't say I've played them much.
I'd say check the GOG, Humble Bundle and also check out Steam. You will definitely find something under 20 dollar these days considering the prices are down with the lockdown discoounts.
