Underrated films set in dystopian worlds

Hi! I’ve been realizing more and more that I love movies and TV shows set in dystopian futures. I just watched The Lobster and found its world very fascinating. I also love Children of Men.

When picking movies, I usually just go by IMDB scores (yes I am basic like that), which is why I’ve seen all movies on their top 250 movies list. Do you have any recommendations of lesser known movies?