I know this thread tends to focus more on documentaries and streaming services - but I am more of a mainstream movie guy - especially the big superhero movies. (hey, I like what I like)
with that in mind, I have to admit that I was not blown away by Avengers: Endgame.
As a piece of entertainment, it was OK, but I did not think it was one of the better Marvel movies. Maybe I expected too much.
Without getting into spoilers, I felt the plotting was a little too obvious. It was like the writers had the different story elements they wanted to use, but instead of flowing from one story-line into the next, I felt you could "see" the various elements being assembled and put together. "ok, this has to go here, and that one has to go there." It seemed 'constructed' to me in a way that Infinity War did not.
if you just want a spectacle, and like the Marvel characters, you'll probably enjoy the movie. A lot of people and critics certainly did. But, in a big superhero or sci-fi movie, that suspension of disbelief is really important. you want to get lost in that world. instead, I was analyzing it.
All reviews/reactions are personal - but for me, as I said, the seams on this one seemed to be showing. maybe I just was in a bad mood that day. dunno.