Need help as a blender beginner

So i have been making this scene and its almost done except for the rendering. I cant get the lights to work properly. Its all fireflies and no recommended settings seem to help. I have tried the denoising feature with different combinations of settings, increasing size of the spotlight, direct and indirect clamping, glossy filter and more.

The render above is without any of these settings.

I can get the main spotlight behind the robot to work properly, but not the two headlights on the robot himself. I have been trying to figure this out for a couple of days, but to no avail.

I don’t have enough information to give you specific settings to change, but it sounds like you are trying to get volumetric fog. A good tutorial here, has two approaches for how to do it in blender…

For eevee… try

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I have tried these tutorials, but those are the techniques i used in the first place.

Then if you can, please share your scene file so people can take a look.