I don’t understand why it has bad reviews, it’s an amazing movie

I don’t understand why it has bad reviews, it’s an amazing movie, it’s a bit slow in the first 20min but after that it’s amazing, the revenge, the thriller and how badass the FL is. it’s show how much people value friendship. Her friend was her life and she was taken from her. the story line is amazing, How she was the deapth of hell, almost died just to revenge the hee friend, plus the Malelead is a complete psycho like what the fuck. i loved the scene where she shoot the boss so unexpectedly while he was trying to sweettalk her