I agree with EGIE, posting a screenshot of your model and/or an example of what you are trying to accomplish will help.
Having said that, I think I understand what you are trying to do. Here’s what I suggest (if you haven’t tried already).
- Use an HDR image for the sky/sun lighting. Choose an image that is a sunset. If you don’t like the built-in preset/moofe options, use a custom image from online like this one from HDI-Skies: https://hdri-skies.com/shop/hdri-sky-302/
- Turn off autoexposure. Adjust the exposure manually until the exterior of your scene looks the way you want it to.
- Place your spotlights—consider using IES lights instead of the built-in lights for a more realistic appearance. Adjust your spotlights until the scene looks right.
If the darkness of your scene is correct for the time of day and you are using manual exposure, you should be able to increase/decrease the spotlight intensity independent of the general lighting atmosphere.
I’m a month late to the conversation, but I hope this helps and you haven’t given up.
Andrew