Gut wrenching book suggestions pls

Hey guys, ive been reading a while now and i need some books that will wrench my heart out and make me feel like life is meaningless. Im talking exisistential life crisis starters.
In terms of genre im not into soppy romance or too-boring books, i like pace, a bit of mystery, and really good plot twists.
Some books i liked was:
– to kill a mockingbird
– fingersmith
– handmaids tale

Thanks