A lot of this seems to come down to the surfaces not having much reflectiveness/gloss and bump (some, none at all). Although you have used the same color paint for the trim, wall, ceiling, cabinets, etc, it is more likely that each item would have a different bump and gloss. Walls would have some orange peel texture to them and the trim and ceiling might have more of a flat and higher gloss sheen - cabinets as well. I also don't see any gloss or effectiveness on the floor? Did you add a map to it? I'd expect it to bounce some of the light. I would also turn down your lines outline % a bit. The counter marble also looks flat- but that could be from lack of light (see below).
I can see a light reflection in the ceiling from the "fake" lighting. It's offputting because the main light sources in the room from what I can tell are just the can lights- which would be pretty typical for this room. As Winston above me mentioned, the lighting could use some color temperature adjustment and not just "white". Add some accent lighting under the cabinets to help shine up the countertops.
Add an emitting material to the lens of the can lights to help show off the light source. Drop a IES into each and give it some color. If you need more fill light, add a rectangle in the center just to help brighten things up a bit.