books about female friendship?

Hi! I am looking for books that center around intense, interesting and maybe toxic friendships between girls. Examples of the type of books im interestedin: Elena Ferrante: My brilliant friend, Margaret Atwood: Cat's eye, Toni Morrison: Sula, Beatrice Salvioni: The cursed friend

Any ideas of other books of this type? I want the relationship between these women to be the main focus, so no romance books etc with friendship as a side plot