Put something behind the door, left corner bedroom or fix the ... not sure how it's called, white thing at the bottom.
You can select the tv screen in the surfaces go to emission option and add a light from there or you can select the emission map and add the picture screen and you ll get some light and shadows from that as well
You can select the tv screen in the surfaces go to emission option and add a light from there or you can select the emission map and add the picture screen and you ll get some light and shadows from that as well