Bladerunner 2049, imho a rare sequel that's even better than the original
Mulholland Drive
Manhunter- there's psychological stuff and it looks incredible.
Redline
Michael Clayton you might maybe like
It's a tv show but Scavenger's Reign
Maybe you'll like Amarcord for the colors
Nightcrawler
Scavenger's Reign was so awesome!
Redline bangs in the club for sure
Someone else mentioned Perfect Blue as an anime film that is very solid in the psychological category here.
I also really like The Thing (1982) for a slight psychological thriller/horror pick
Nausicaä is a gorgeous Studio Ghibli film with some post-apocalyptic sci-fi stylings
Dredd is a very over-the-top dystopian sci-fi action film, gorgeous use of color at times, certainly not a very high brow pick, but I enjoy it a fair bit (CW: >!Imagined rape!<)
Rewatched Michael clayton. That opening monolgue is still great.
Redline rocks
You might like Annihilation
God damn I love this movie.
Stalker
Moon (2009)
I don't really remember what it was about tbh but the vibe was kind of similar to gattaca
I rewatched it like a year ago. Its nice.
I highly recommend Bacurau. It's a Brazilian film. Very unique movie I've never seen anything like it before.
I'd also recommend watching it without watching the trailer or even reading up on what the story's about, it'll hit better that way.
Holy hell, just watched this and it was fantastic. Definitely watch it blind, great suggestion.
splendid 
fuckin crazy cool film glad you liked it too.
finally got around to watching this one today - fantastic
Color Out of Space
Suspiria is a favorite of mine, and a lot of other Dario Argento movies are enjoyable for me. Deep Red, Phenomena.
Death Race 2000
Aniara
Oh man, Aniara was ace. Haven't seen anyone mention it before.
Most of these aren't really sci-fi, but are at least visually stunning:
The Fall (2006) (directed by Tarsem Singh),
2001: A Space Odyssey (Kubick, obvs),
Hero (2002) (by Yimou Zhang),
House of Flying Daggers (2004) (also by Yimou Zhang),
Tears for Sale (2008) (from Serbia, by Uros Stojanovic)
Hard to be a god.
Russian scientists travel to observe a planet with a species identical to humans, but whose society never progressed from feudalism.
It’s not an easy watch, but it’s a brilliantly made film.
Solaris, Harakiri, Mishima, Brazil, The Double Life of Veronique, Belle de Jour, A Clockwork Orange, Dr. Strangelove.
Oh strangelove really rules. I love George C scott.
Oh, he was awesome in that. I actually only just watched Dr. Strangelove for the first time a few years ago but, damn, I love it!
It's such a subtle anti-US/NATO/Nazi movie too. Soviet Union seems extremely reasonable. Most libs don't even notice, but that's typical I guess.
Yeah its very well done. Its also has this element of a false flag and deniability.
It does show ussr as a country that has to contend with the rabid imperialist west. Even the bombers and the way they talk when entering ussr is perfect.
Just torrent everything on my Liked list on Letterboxed.
Ex Machina might fit the bill
I think you would enjoy "Nightwatch" (1994).
Probably also Green Room.
I also wrote out this list a while ago
I don't watch much scifi. Here's some stuff off the top of my head.
Naked by mike leigh
Perfect blue
Twin peaks (not a movie, but close to dreamlike nightmare)
Inland empire
Mandy
Some one mentioned Kubrick. So I will throw in,
Eyes wide shut
2001
I think you might like Mandy (2018)
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Here's a list of tons of leftist movies.