Looking for Sci-Fi thriller recommendations! New to the genre.

I am new to the sci-fi world, but I am looking for some recommendations! I have read Dark Matter by Blake Crouch and LOVED it and just finished the audiobook for Project Hail Mary by Andy Weir and loved that one too. I'm looking for something similar — nothing too fantasy, but something along those lines. I already plan to read more by Blake Crouch and I have the Dark Future series by John Marrs on my TBR too. Also maybe some recommendations for other more tame books like Atmosphere by TJR, which is already on my list?

For reference, I like spacey things, apocalyptic things. But not Star Wars-esque or anything necessarily too focused on aliens. Project Hail Mary was cutting it close to being too alien for me. Some shows/movies that I like in this realm are The 100, Black Mirror, Leave the World Behind, the Martian, Passengers, etc. Even something like Contagion?

I have no interest in ACOTAR or Fourth Wing or anything in that area of fantasy. I guess I'm interested in more "realistic" science fiction? Is that what all science fiction is, idk?

Side question — I didn't know the Martian was based off a book until well after the movie came out and it is one of my favorite movies. Is it worth reading the book after already seeing the movie? In this case specifically? I usually like reading the books first but in this case obviously I didn't, so I'm curious.

EDITED to add: I guess people are considering what I am looking for speculative fiction? I've never heard of that sub-genre so I don't know.