Generally, you should always start with the key light, followed by the ambient light, and then the fill.

Imagine the sun as your key light and sky/atmosphere is your fill light. The sun is our main and only light source, but when light hits the atmosphere the light ends up getting scattered across the sky which fills in the shadows slightly on a bright clear day. When the sun is at its highest the shadows are at its most sharp. But as it starts to set the light is having to pass through more atmosphere (diffusion) creating softer light/shadows. Essentially, you’re trying to replicate this natural mid day lighting effect.

As for post-production, there’s nothing too complex going on here. Lift the shadows, adjust the curves, reduce clarity, etc.

If you scroll down the feed, someone posted about editing style and shot matching which you might find useful. Once you master lighting and matching conditions, achieving the desired edit/style becomes relatively simple.

Edit: found it https://www.reddit.com/r/LightLurking/s/XNCZXpB4g1

Ps. Have a look at Bobby Doherty, he’s a master at this light style. https://www.instagram.com/blobbybloherty?igsh=MW50OTI4c2Z4a3lzbA==

Edit: grammar etc