Horrible render - what am I missing?

 I uploaded a photo with only subject and no background Horrible rende. . . and then put my prompt : "rooftop apartment, NY city, in the style of misty atmospheric and moody lighting, carl zeiss distagon t* 15mm f/2.8 ze, light gray and dark amber, soft edges and atmospheric effects, dark gray and silver" - just an example - and I get a really bad looking backdrop - see attach . . . what am I missing here? I don;t have issues in Photoshop when I do this . . .