[UPDATE #1] How do I get good at lighting

Original Post

So this is one of my attempts at lighting.It looks awful.

The skyscrapers here are lighted form inside with a point light, since they are hollow.I am using a sun light too to make the general scene brighter, its too dim without one.

finally, one spot light that is linked to the humanoid (i.e it only applies to the humanoid) to give the humanoid more highlight.

oh forgot to mention there is a slight fog to dim the background, using a cube with volume scatter

So after following some of your tips and suggestions, I have achieved the following result:

What I did:

Use an HDRI as a base
Change sun position to make shadows visible
lower sun strength
change the light color of the skyscraper behind the humanoid
change the highlights position and color to match the skyscrapers around
modified the fog, increased its visibility and changed its color and density

Although it doesnt look perfect nor great, I am very happy with how it turned out , and that is thanks to everyone here.

I am planning to make more changes, based on the other comments, like that comment that suggested bloom, so expect another update inshallah 😄

Anyway, really like the new render, thank you lemmings 🤍