You subjects are not properly exposed.
I wouldnt say thats to this year. Its been done overly much the last few years. First shot is great, and probably had an octa lighting. The next 2 examples you have posted are desaturated a bit also. The last shot could have been shot it broad day light for all we know. Thats a speed light behind the subjects. Get up to your max sync speed (or close to) and you will blow the background dark. Pretty easy.
You subjects are not properly exposed.