Don't let the 1-star reviews fool you.

Rating: 9/10 (26 April 2019)

This isn't a bad film. It's not the best Marvel film, but it's far from the worst.
Most of the 1-star reviews seem to lack much logic, and were probably as short as they were because, they either didn't see the film, or saw it as a "SJW film." Accusing Brie Larson of being wooden in her performance is about as dumb as criticizing Schwarzenegger of being wooden in The Terminator. Her character's coming from a society that is pressing her to keep her emotions in check... it's part of who she is.
If anything, the only grievance of merit is them taking such liberties with the origin story... but, as with much of the MCU, each character and their storylines are tailored to make the Cinematic Universe fit together.
It's not a perfect Marvel film, but it's far from a bad one. If anything, I'd say it's on par with Dr. Strange or Ant-Man, both in terms of levity, and of quality.