You want a multiverse movie? Watch Everything Everywhere All at Once. The only way I think I’d enjoy this movie is if I were on mushrooms or something.
It is superficial at best, scratching only the bare surface of character arcs and story. The majority of the film is exposition and nothing else; maybe they hoped the excessive cgi would make up for it, but visuals still fell short. And don’t even mention the script! I felt like they pulled it out of a word doc I wrote in the 7th grade.
Not worth the time. I would unironically rather watch Morbius.