0 Shadow blur
Ambient Lighting make it Red
Click plus on the lighting and add Depth of field, edit the settings until it fits right,
add some blur maybe .1 or .06 cause the pixels are very visible
make sure ur ingame graphics is max because thats affecting the coloring,
add colorcorrection the same way you added the depth of field and edit saturation and contrast to make it more volcano like,
and mainly get a volcano sky on the toolbox.
also maybe add some fog or atmosphere, sometimes it looks ugly that way but idk maybe it will look nice