wanda didn't die in multiverse of madness too many people have tried to debate this with me so let's clear this all up at the end of the movie when she comes to terms with her actions she decides to destroy one decor and all the dark holes and when we see the building supposedly crusher there is a very purposeful red vfx explosion that we can see and this is clearly the hint that she will survive somehow and she's probably pulling a luke skywalker yoda and she's going into exile because she feels ashamed of her actions but
then when the avengers need her she'll be there