Speculation at best. If it happened off-screen and was never talked about, then it might as well not have happened.
My point, ultimately, is that not reacting to the deaths of people fighting alongside you isn’t a major factor in Carol’s story. You can probably lump the deaths of Thor’s friends in with his grief at having lost everything, but they’re never mentioned specifically, and since they were such minor characters it isn’t important anyways. Same can be said of the Kree soldiers in Carol’s unit. The fact of the matter is, they’re minor characters, minor antagonists specifically.
What should be complained about is the lack of characterization in Danvers herself, not in what amounts to some side characters.
Neither were Carol’s team, especially since they ended up being the villains.
It’s okay, and good, to give side characters some background and characterize them. The side characters in Wonder Woman are a good example of this, and so is someone like Bucky in The First Avenger. But that’s because those people play an important role in the story. Carol’s team doesn’t. Captain Marvel is about the fundamental differences in ideology between her and Jude Law.
Again, not the point of the movie. It isn’t really Captain Marvel’s place to do so. I agree with your point that he probably has less personality in CM than GotG, but the inclusion of him still lets us know more about his relationship with other Kree like Ronan.
And he did have lines, but most of it amounted to battle chatter. It’s not like he was important in GotG, though, let’s not forget he died in that movie.
Perhaps this would be a more forward discussion if you told us more about what you like as well as dislike about Dark World instead of triggering people by just saying you think it’s better than CM. 
I feel like a lot of my points have been kinda scrambled, so let me consolidate my opinion here:
CM and DW share a lot of the same problems, bland characters being the more obvious.
I think Carol in CM is definitely more boring than Thor in DW just because Thor was always a mainstay and we knew more about him from Thor and Avengers.
DW has a worse villain because Malekith was a big, grey alien who wanted to destroy the Earth and gain power and all the cliche, boring, standard villain stuff. Jude Law’s character (yes, I forget his name, never said he was a good villain, just better than Malekith) has the one up on the Dark Elf because he has somewhat of a personality (manipulative, deceitful, and abusive), though if you think about it enough he shares a very similar motivation to Malekith. He’s also Jude Law, a much more recognized and beloved actor.