Help: Lighting a dynamic scene?

Hello everyone!

I come to you because it has been weeks I'm trying to settup a beautiful realistic lighting for my scene. The problem is that it's a little room with variable dimensions (a kitchen). And every walls and furnitures are dynamically generated! So impossible for me to bake a map or something. I've tried with Segi but I can't get a good result.

Please if someone has some tips/advices/assets/script which can help me I'd be so happy! (doesn't need to be free)

Thank you so much!