Title basically. I tried to underexpose the shadows severely to make it look more the silhouette, but that just made it look even worse. I suppose the only way to get better pics is to find a better location. But I would appreciate if someone can give me advice on any other tricks I could use to make the sky look better and take focus away from the urban hell

Try different techniques, or even colour saturation. Literally one of the best pictures I’ve ever taken was a water drop in a dirty bowl in my sink. Just the right exposure, focus and timing and boom it was perfect from ordinary.