Long dystopias- classics?

I'm looking for a kind of long book (well title basically)
Here are my highlights so far, maybe to give you an idea? Some of these aren't really well known, feel free not to consider them.

• 1Q84 (in progress, but i already really like it!), Murakami
• L'avalée des avalés (The swallower swallowed), Ducharme
• L'étranger (The stranger), Camus
• 1984, Orwell
• Fahrenheit 451, Bradbury

So, here's what i'm mostly looking for in books (i'd guess?) or what i really enjoyed so far:
– Classics
– Dystopias
– Books where you don't exactly understand what's going on at the beginning

I looked around and ended up considering the books that people my age'd read in school, but i'm not especially fond of 10th-11th grade recs😅

I read in both french and english
Thank you!