"One simple lighting rule that I adhere to whenever possible is what’s called the far-side key. You want the “key” or brightest light on your subject to be hitting them on the side of their face further from the camera. The side of the face closest to the camera should be darker by 1-2 stops. Even with available light look to recreate the far-side key, even when stealing shots."
Thaddeus Clark and the farside key
"H I - 8" by Thaddeus Clark directed by Raafi Rivero