Okay, I guess I wasn't clear. I was tired, but basically the story was not engaging me. I didn't care about the characters, and I didn't care about the story. If a movie is engaging me and makes me care, I do not fall asleep. But this was boring, and stupid.
Wakanda has always been the sole source of vibranium, because it is where the meteorite that brought it hit Earth. Now it turns out that there was a second meteorite, also bringing vibranium, and furthermore it spawned another highly advanced civilization, one that in some ways exceeds Wakanda, yet has remained hidden all this time, just like Wakanda. Their emissary seems to be some guy with tiny little wings on his ankles which somehow defy all known physics and enable him to fly and even maneuver and fight in mid-air. And an American student designed a device which can detect vibranium, so they want to kill her. And since Wakanda does not agree with killing her, Wakanda will instead be the first nation to get wiped out by the new bad guys. Come on. None of that makes any fucking sense.
Meanwhile, some of the Dora Milaje are having some personal issues. I suppose that could have been interesting if I cared about them and their personal issues.
Also, Martin Freeman and Julia Louis-Dreyfuss were in it. I do not think that they could have been interesting under any circumstances.
It is possible that after I nodded off the first time, I missed something that might have made things more interesting, but this was not very engaging movie.