There are few films that I could suggest:
1)
Mandy. Pure style over substance in the best way possible. I usually despise this kind of movies, however: Nicolas Cage starring in a good movie, surreal slide into the madness, demon bikers from hell (albeit not really), weird cult as a target of revenge rampage, chainsaw duel, fantastic cinematography courtesy of the author of the beautiful Black Rainbow - all this sell this movie to me. It's a treat. At least for me. The title doesn't even appear for something like the first half an hour. Awesome.
2)
Annihilation. Classic sci-fi with its fair share of horror. IMHO, a bit better than somewhat overhyped Arrival (and yes, the book IS better, if you ask me). It works, and it works rather well on a number of levels. Also, it touches upon one of my favourite themes in sci-fi: alien eco-systems and their enteractions with the earthly one.
3)
The Void. Cults, body horror, space warp, surrealism, the whole deal. I haven't seen this one, but do intend to, and have seen good reviews.
4)
Upgrade. I'm hesitant about suggesting this one. It has rather sharp changes in its tone as the story progresses. From the mellow, melodramatic even, tone of the supposedly "thoughtful" indie sci-fi to low-budget cyberpunky action-y flick to the paranoidal fiction. A lot of times it feels like rather tasteful parody of some of the recent "high-brow" sci-fi movies like Her and, of course, (again, overrated IMO) BR 2049. It's a glorious mess, that somehow manages to maintain the focus, posses a moderately intriguing setting and has an amusing ending. That said, all these sharp turns might be rather unpleasant to some viewers and low budget does shine through rather often. Plus, comedy bits near beginning are somewhat jarring.