Feels like an unpolished script, not a film (spoilers in second half)

Rating: 3/10 (9 April 2019)

The movie wasn't entirely bad. The CGI was overall very exceptional. The blasts, the ships, the age decreasing on Samuel L Jackson, was overall pretty good. However a few scenes did have noticeable green screens which you wouldn't expect from a movie of this budget. Some of the acting was also pretty good. Samuel J Jackson and Ben Mendelsohn did very well, and Brie Larson did alright for what she was given.
Those are my only positives on the film. The rest of the acting is very lackluster, especially from Maria and her daughter. The fight scenes were boring and had absolutely no tension. In every scene people get shot out and die instantly or just get knocked around harmlessly. There really aren't any stakes for Captain Marvel and doesn't develop throughout the story. That's my main problem with the film, even though Thor 1 was a much worse film, at least Thor as a character is much more dynamic compared to Captain Marvel.
Spoiler area: Maria is a terrible character. We keep getting told that Maria is Captain Marvel's best friend, but we are only "shown" this in literally less than 10 seconds worth of flashbacks. The acting of her was also pretty terrible but I don't see how many actors could've pulled it off with this level of writing.
The plot twist of the Skrulls actually being the good guys and the Kree being the bad guys is completely meaningless if you were invested in the first Guardians of the Galaxy. I've heard people defend this by saying "it's just an origin film and of course we would know what happens, it's all about how it affects the main character." But there's absolutely no reason to have sympathy on this since we already know what happens! It doesn't mean anything!
The last thing I want to talk about is the ending fight scene, where Captain Marvel fights all the Kree at the end of the film. I want to compare this fight to the battle between Captain America and Iron Man at the end of Civil War. Aside from Iron Man cracking a few jokes to himself, the fight is very emotional, especially to Captain America, who is forced to fight his friend. In Captain Marvel, however, they turn this into a poor attempt at a James Gunn fight scene with pop culture music playing in the background, trying to give the scene a very light-hearted feel, even when Captain Marvel is literally fighting some of the only people she remembers. But I guess that doesn't matter, now does it, since we are only ever "told" that they are friends.
There's a lot more to say, but most other people have already said it. A dumb fun movie if you turn your brain off.