They told you that story, believing it or not, that depends on one's perspective.
Four strangers meet, and they become family, you just believe that?
I am not saying it can't happen, but in this movie it is just not convincing, there is no build up, they just trust each other and get along, I think Disney cartoons probably have more depth.
Yep, three of them have no family, one's parents don't care and live in China. Suddenly a stranger risked her own life to save them. Yep, I believe it can bond them together.
I'm not saying this is good movie, just better than terrible Venoms, forgettable Mobius, ADHD Across the Spider-Verse.
Come to think of it, the movie should makes Dakota Johnson's character more of a loner: Cut Adam Scott out, and without the scene of the baby shower party. It can makes the ending more impactful.