Highly recommend the first book that the movie was based on. To a certain extent enjoyed the two sequels of the original trilogy.
Jeff Vandermere just released a new prequel book called Absolution that was a little bit tougher of a read for me for some reason (probably because it has been nearly 8 years since I read the original series), but still fascinating if you like the area X books.
He has some other weird fiction books that are definitely worth scoping out too: Borne is very different from annihilation but the characters have really stuck in my head since I read it. Almost everything he touches seems to touch on humanity’s relationship with the environment.
I hope you enjoy! It’s kinda like an environmentalist’s Roadside Picnic.