db={"User":[{"_id":"ObjectId('5e8baxxxxxe400a')","Email":"xxx1@gmail.com","Favourites":["Red","Blue","Green","Orange","Black"]},{"_id":"ObjectId('5e8baxxxxxe4002')","Email":"xxx2@gmail.com","Favourites":["Purple","Pink","Magenta","White","Black"]},{"_id":"ObjectId('5e8baxxxxxe4003')","Email":"xxx3@gmail.com","Favourites":["Red","Yellow","Grey","White","Black"]},{"_id":"ObjectId('5e8baxxxxxe4004')","Email":"xxx4@gmail.com","Favourites":["Green","White","Pink"]},{"_id":"ObjectId('5e8baxxxxxe4005')","Email":"xxx5@gmail.com","Favourites":["Green","White","Black"]}]}

db.User.find({"Favourites":{"$all":["Red","Black"]}})