A few days ago I shared my opinion about this movie with another user of the community and I still keep it and I share it with you.
The film certainly has a touch of originality that differentiates it a little bit from the rest of movies that go the same way and which I will not mention since I'm sure you know which ones I'm talking about and that the truth in many has left a bad taste in their mouths.
With this one something very interesting happens and is that the beginning and its final part are for me the most interesting since they show something that at least I had not seen and that kept me interested, but half of the film seemed to me very weak and as you mention something flat, without a good argument and for me without rhythm, much less with an attractive effect for the viewer became somewhat repetitive and boring until they come to stomp to lift that little that is left.
I hope they bring better movies and get out of their comfort zone, I believe with all my heart that the film industry should change and bring new things.
Greetings! @hdprinter