Why was this rated such a good movie?

Rating: 5/10 (3 July 2018)

Yawn. Oh, good, it's over!
After an interesting start, the film tumbles to boredom. Tommy Lee Jones talks his usual 'what the hell is he saying' jumble. Javier is a brilliant actor, but he just seems to do everything in slow motion in this film. Is it just me or does the acting seem very, very laidback - almost lazy?
The entire film I was rooting for the protagonist, who is then suddenly killed off screen. Uhm, why? The ending is very abrupt and leaves way too many questions unanswered. It leaves you with a sense of 'what the hell'!?