First of all, what would be the reason you don’t want to use the actual lights on the ceiling for lighting ? Are the reasons artistical ? Or technical ?
I would just place static area lights on each light in the ceiling, before baking.
The first image, even though it looks a bit better you have some physical implausible shadows, like the sharp shadow from the right side column.
In the baked image the shadows are very soft /low resolution/ and I think you should watch some tutorials about how to increase the quality/resolution for baking.
For example maybe this one:
Bake Lighting FASTER with GPU Lightmass - by William Faucher
- The important part is the one where you learn how to increase lightmap resolution.
You can also find newer ones.
And in the second image you can of course just increase the overall brightness so you can match the first image.