How do i get a less harsh light and a softer shadow like the reference
In order to achieve smoother shadows, you need to increase light size. If it’s sun light in your case, try increasing the Angle.
That angle representation from Wikipedia:
If you are using an environment background (HDRI) for lighting, try to find a cloudy version (having very bright and small sun in one spot causes sharp shadows).
It’s a bounce light that makes the light softer. I googled the image and the building was made to give shadow yet lighten up the interior.