GOTG had a cult following for many years. Their books would have been canceled immediately if they weren't at least somewhat profitable.
Carol Danvers' books have never sold. They have had to re-imagine her personality so many times that she is an absolute cipher, and they have had to "reboot" her comic like 8 times, sometimes not even making it to issue #2. At this point they might as well just make every issue of Captain Marvel be labeled #1 because none of them have actually rebooted her or fixed what's so fundamentally unlikable about her character.
No-one can describe Captain Marvel's character because Marvel still hasn't figured out how to make people like her. They think as long as they hype up how powerful she is and make her be in the middle of lots of important stuff that it will make up for her absolute black hole of a personality. The most interesting story she ever had was the one where she died and Rogue got her powers.