lighting is very simple. HDRI image is 3y.o. Waterbuck Trail (source: https://hdrihaven.com/) . Value multiplied : 1
Value added: 1.5
In addition there is a sun light of strength 0.2 from monutains direction (slightly yellow color).
The strength can be increased to obtain more sunshine in the render, which looks good so far. However, the backgroud is overcasted already, therefore 0.2 is enough to catch the mood.
Color management is also simple:
Look: Medium Contrast
Need to tweak little bit to get the right result.