Definitely try out Dorf Romantik on Steam. It's a non stressful landscape puzzle game. It can also be challenging when you want everything perfect, but it doesn't need to be.

Source: https://www.polygon.com/reviews/23049119/dorfromantik-review-1-0-update

This is when I go to mobile gaming because I could play in my bed. For me it's mostly:

• Stardew Valley
• Emulating JRPGs
• Doing dailies on my gacha games ---> really brainless clicks lol
• Magic Survival - Could easily make me play for hours upon hours
• Night of the Full Moon

Not sure it’s what you’re looking for, but A Short Hike is a very comfy game. I first played it in the first few months of the pandemic and it was a pleasant escape from things. Fun exploration, nice aesthetic, and good music

Maybe a city building game?

Bloons isn't too involved but it can get intense

What about games like kona, abzu, firewatch, a short hike, etc. A lot of exploring

Donut county

• Brotato, you play with a single stick much of the time. Only need to push buttons between stages when you pick upgrades.
• Superflight, also single stick, you can make it as casual or risky as you want
• Dorfromantik, if you play casually and just make a pretty landscape

They all play great on the Steam Deck.

Dragon Quest Builders 2, its like a better more objective driven Minecraft with Animal crossing elements. I have been playing this on and off since it released when i have nothing else to play or when i am bored. the characters talk a lot but you can ignore it.

Minecraft is the coziest game for me. Whenever I want to just zone out, but feel productive, it's a good option.

A few brainless clicks now and then, you say? A couple years ago I was sick and I played the game The Longing and I remember thinking it was the perfect stuck at home sick game.

AER: Memories of Old

Feather

Both are very relaxing games about being a bird and flying around a beautiful, somewhat surreal landscape.