Which book should I read next? Kite runner vs. station eleven vs. room

I'm in a reading slump and trying to get back into it. Postpartum brain X3 has done me no favours so I struggle to get into anything too complicated. I love post apocalyptic, tense, horror sort of stuff but open to any genre.

Kite runner - never read. Heard it's great and one of THE books to read. No idea what it's about.

Station eleven - remember it (at the time) as my favourite book but I can't actually remember it at all or why I loved it. As far as I can remember it's post apocalyptic setting but with a softer story about community etc.

Room - remember enjoying it. Remember the general gist of the story but will still feel like a new book to me. Probably the fastest paced/most thrilling option