Let's be realistic.

After playing with our expectations, this turns out to be a very different sort of film.

The plot isn't so bad, but the pace of storytelling is too slow which makes people bored. Certain moments are so obvious and unnecessary for the main plot. I would've fast-forwarded those moments if it was an online streaming. The ending looks like implying a sequel, not sure if this movie will get one

The film's masterful storytelling did its job. The message was clear. No need to overdo.