I basically agree with PBB.
#1 is too far underexposed. I see what you were trying to do, but you simply need more light to make it work. There's some detail in the shirt and beer bottle, but not enough.
#2 needs more light from the left and to have him look at the camera instead of off into space, looking confused.
#3... Did somebody set a camera on the table and accidentally fall and trip the shutter? Not doing a thing for me.