This movie is a shining example of someone who had a very specific vision for their film, so they just did whatever they wanted and it didn't end up coming together in any meaningful way. In an attempt to be deep and symbolic the movie is instead pretentious and a waste of time. The story is nonsensical and confusing until a character just explains it at the end. It's manages to be obtuse and hard to follow without actually being intriguing or leaving much up to interpretation.
It's shot like absolute garbage, mostly using a lot of ugly close ups and handheld shots that have no sense of framing for the scene. Occasionally the movie has weird interludes where the aspect ratio changes to basically portrait view for seemingly no reason. There are some interesting visuals involving paintings made by the main character, but they don't end up having any real significance other than looking cool.
Every performance is laughably bad; the lead especially seems incredibly bored every time that the scene is supposed to be suspenseful or scary.
Probably most damning, it just isn't scary in any way. Nothing that happens to the main character and her son is really that threatening or disturbing in any way. There are a litany of cliches and played out set ups that never go anywhere. For a movie that's paced like a slug on wet concrete it doesn't create any sense of suspense whatsoever.
In total, it's stupid, it's boring, it's ugly, it's poorly acted, and it has nothing to offer on a story level. Skip it.