The movie was OK, not great by any means, but watchable. The production value was decent. Other than Kelly Marie Tran, the acting was average. However her Ba, played by Toan Le, was also exceptional. The creep factor was also average. I never felt an overwhelming sense of dread, and that's obviously what the movie was going for. Just didn't completely land for me. Due to the limited budget, I imagine most of it went towards the lead actress and the SFX. Other than those two characters and central story, nothing else is really fleshed out. Although this was another one of those the metaphor-is-the-monster movies, this one actually had a real monster, though there were plenty of hallucination moments.
As far as the very negative reviews, you can kinda see the pattern. Bunch of incels rattled that an Asian woman has the audacity to get the lead role in a film. I guess this could bother me if I was twelve years old, but being an adult, this "issue" had no bearing on my ability to watch and enjoy the movie.
So in summary, an average movie that could be worth your while. There are literally thousands of poorer choices you can make in the indie-horror genre than this one.