Just from a lighting point of view, it is flat.
My guess is that you have the 'camera light' checked (if this is really LW and not the internal engine? It is bad enough to look like the internal one.)
The camera light is a wonderful feature to allow anything to be illuminated so that you can see where you are... but isn't going to help produce a realistic lighting scenario.
Ditch the camera light, turn down ambient, add some yellow/orange to your sun(it is too cold now, especially for the time of day [low angle]), and add window lights to cast some diffuse illumination into the room. Try (I haven't yet myself) Dwight's tip in another thread to place a window light in a warm color on the ceiling to add ambiance.
Add some entourage ... try the archicado.fr web site for some good kitchen objects, for example ...
Good luck!
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB