The Dune universe lacks computers, which is why spice is so valuable - does that count? Still has plenty of machines, but they aren’t the story

It’s called Dune

Try searching for authors who describe their work as “Speculative fiction” - that’s the way most of them don’t admit to writing low-brow schlock like sci-fi.

Also near future sci-fi tends to be a bit lighter on the “magical machine” plot tropes. Climate fiction might be worth looking into too, most of the near future books exploring possible global warming consequences aren’t all hopped up on magical technological advances.

Edit: also check out various books described as literary speculative fiction. Authors who want the intellectual cred of being a literary writer tend to land in the speculative fiction genre more often than not.

Anathem by Neal Stephenson

Stories of Your Life and Others by Ted Chiang

The Caves of Steel by Isaac Asimov

Cat’s Cradle by Kurt Vonnegut, Jr.

The Godmakers by Frank Herbert

Self-Reference ENGINE by Toh EnJoe

*Bonus: Low (comic series) from Image

There’s plenty of star trek episodes that are more about philosophical and societal questions than tech.

The bicentennial man by Isaac Asimov comes to mind. Which is about a robot, but in essence it’s about the philosophical question what it means to be human.

There’s Ubik by Philip K Dick, which is about about tech, when you get down to it, but in a very unique and un-tech like way.

Flowers for Algernon by Daniel Keys is not about tech, but the chronicles of a brain surgery patient that became extremely smart.

Hyperion by Dan Simmons is basically just “The Canterbury Tales” in space.

There’s plenty more stories that are not really about tech. You could try searching for dystopia themes, like “Maze runner” or “the hunger games” or “I am legend” or “wayward pines”