Hi Dagaumph,
You can refer to my old post about this here:
https://answers.unrealengine.com/questions/446658/can-you-light-a-large-room-using-a-single-light-so.html
(Copy pasted from the link)
You can tweak your singular point light to light up a larger area by doing this:
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Place a point light in the center of the room, or wherever you want it to be
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In the Light tab, set the intensity to 1
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Extend the Light tab, and untick ‘Use Inverse Squared’
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Lower the Light Falloff to ~2
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Increase the Min Roughness to above 0.5 (This gives a nice look to the lighting with these settings)
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Now you can just play with the attenuation(and intensity by degrees of 0.1) to fill the room with light as you see fit