How do I adjust sun blur?

So the sun in a default template looks really bland, for example,


Without switching the Blueprint Sky Sphere to the static mesh one, cause I’m not sure how I would do TOD with that, cause I’m pretty sure it doesn’t have a night time, how would I make the sun look more blured and not just a circle, this this one. It doesn’t have to have them colours, just the sun blur like thing.

Select the light and in Details Panel > Light Safts > Enable Light Shaft Bloom, then tweak the values as you like.