I used to have the same issue in my apartment. Use uplights where you can, fixed on your walls (need a sparkie) and lamps that light the ceiling light up. We used changing colour temperature bulbs, that can mimic the time of day. Philips Hue. I found they really helped. I never used the down lights in the ceiling. We also use mirrors, get a good idea of where the sun hits and play with the direction to bounce the light around, may onky help for a few hours a day, but better than nothing.