The big issue with this movie is that the protagonist doesn't really struggle with anything. I can't wait to see the movie pitch video from Ryan at ScreenRants on this. "Its super easy, barely an inconvenience" would have to be the title of the video. Rey from Star Wars would look at Captain Marvel and go "Damn girl. And they thought I was bad".
And as I've said before, they could have easily written her to be tragic and sympathetic. She got her mind wiped, brainwashed, enslaved, and forced to do evil things while having her life and memories stolen from her. I mean that's pretty fucked up...too bad none of this seems to impact her in the slightest. No redemption arc, no path of discovery to find out who she really is, no realization that her life is a lie and what that means. She just realizes she needs to shoot new bad guys and that's it! And then at the end, she basically becomes an unkillable god, so the climax has absolutely no tension at all.
And it isn't like Marvel has struggled with super powered invincibles in the past. Thor has enough plot armor to wrap around the sun, but there is always emotional vulnerability, character growth, and some kind of challenge that keeps him from winning with ease. The Hulk is mostly invincible, but Banner can't always control him and it ruined his life and all his relationships, which is covered very well. Cap is so strong, he can't even get drunk, but goddamn it has he been through some shit. And then Captain Marvel comes along and she's just lord almighty and the villains have no choice but to bow before her awesomeness.
I hate to compare her again to Superman, but her portrayal in this movie exhibits all the flaws that people have spouted about The Man of Steel for years now. He's too powerful, he can't die, yada yada yada. Except I've seen examples of Superman showing emotional vulnerability and have to struggle with his life, his powers, and his responsibilities. Superman II is a great example. Man of Steel, for all the flack that movie gets, has some great scenes from Clark's childhood of him getting used to his powers. Even Superman IV...that awful...awful movie, has Nuclear Man who poses a physical threat to Superman. When I start comparing you unfavorably to Superman IV, you did something wrong. And hell, even Batman V Superman, which missed the mark about as much as any movie can, at least killed Superman, showing that such a thing was possible.