It's pretty amazing how a story about immortal gods can feel more human than most of the MCU's previous offerings. The Eternals takes the tike to explore the characters' beliefs, ethics, and flaws in a way we dont often get to see in movies like the Avengers.
I can see how this movie wouldn't be for everyone. If you came for non stop action its not for you, and if you want a gritty dark exploration of humanity its not that either. What The Eternals offers is a disfunctional family of gods debating whats best for humanity while expanding on the Marvel mythos. Its very ancient Greek pantheon in that way, and if that's the kind of thing you like, you'll love this movie.