Looking for some standalones

Hey all, been on a reading/listening kick this year. Looking for some recommendations. Mostly into SciFi/Fantasy but also some Action Thrillers.

Recent listens:
Dungeon Crawler Carl 1-7. This series has been just amazing.
Ready Player One.
Ready Player Two.
The Martian.

Recent reads:
Dungeon Crawler Carl 1-7.
Dresden Files Twelve Months.
Operation Bounce House.
Bobiverse 1-5.
Project Hail Mary.
Artemis.
Murderbot Diaries 1-3.
Red Rising 1-3, Currently reading 4.