Marvel DC Crossover

Why is Wanda Evil in Doctor Strange 2 ?

Scarlett Witch :– Scarlet Witch has never been completely on the positive side 

Because she also showed her negative role in Avengers Age of Ultron

when she was fighting against Avengers And in the same way,  

she has shown her negative role in Wandavision TV series as well. 

Doctor Strange in the Multiverse of Madness is a Latest movie from Marvel Studios