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Find a photo reference that is close to the kind of mood you want, and try to understand what creates it. Is it because the shadows are soft? Hard? Are things blurry in the distance fast, or do they remain sharp? Do they lose color as they are more distant, or does their color shift? If yes, towards which color (usually blue outside, grey inside). Etc. Also, you don't have to play with lighting only, you can fake lighting by drawing shadows in your textures for example.

What I'd do is take this image you have, and draw over it in some painting app to try to get the mood I want, then think how I could reproduce it with the tools I have. Again I'm not a pro by any stretch...But that's what I'd do.