Everything Everywhere All At Once
I don't know what caused the fact that we have two multiverse movies in theatres at the same time. Coincidentally both tell a story about a mother's relationship with her family. Everything Everywhere All At Once is my favourite though[^1]. It takes the multiverse concept to the next level, while it also tells a very human story. Doctor Strange is nice, albeit a bit more formulaic. Still one of the better Marvel movies. Everything Everywhere is super creative, crazy fun and comes highly recommended.
[^1]: If you watched and logged the movie, Letterboxd developers have been creative with some of those googly eyes.