Fire Emblem Three Houses is a lot of bang for your buck. Sort of anime wartime Harry Potter with multiple routes. Phenomenal game.

Fire Emblem Engage coming out next month.

Surprise hit Mario and Rabbids Kingdom Battle, often on sale for $20, plus the sequel just came out a couple of months ago to great reviews, Sparks of Hope.

Triangle Strategy is a gorgeous looking game that is apparently a return to form from Square Enix to strategy games of old.

Tactics Ogre Reborn is literally a Square Enix strategy game of old, remade with a lot of under the hood improvements as well as voice acting.

Diofield Chronicle was the 3rd Square Enix tactical game to release this year but I think it's more real time.

XCOM 2 collection is on Switch!

So is Civ 6.

Into the Breach is a fantastic indie tactical game with smaller levels where you know the enemy's next moves.

Wargroove is an indie love letter to Advance Wars but in a fantasy setting

Speaking about Advance Wars, the 1+2 Remake is sure to come out any day now ... right?? The Ukraine war has sadly delayed the game indefinitely.

I'm sure I'm missing more. I think you'll have better luck asking the /r/NintendoSwitch subreddit for Switch recommendations.