How to get better shadows

I am new new to Unreal. I learnt some basics and started a new project.
But i have some trouble whith basic lighting. If someone could help me it would be appreciated.

As you can see from the screenshot

  • i would like to more detailled shadow from the grilled panel, right now it is blobby. I would like to see the hole in the shadow.
  • I would like to have lighter shadow to

I played with the lightmass settings but for now i cannot get good results

Any advice is welcomed