Reset lighting to default?

I just can’t get my lighting right. I just want even daylight lighting, inside and out.

If my light source intensity is less than 5 its dark, and => 5 creates pitch black shadows as shown.

Trying to return to default daylight settings is a real pain. Where is the reset button? lol
Simply changing the values back after hours of playing with them doesn’t do #$%. I hate ue lighting so, so much…

I can’t just start a new project, I have tons of crap set up in this one.