What smart device options do I have for poor lighting in living room?
There are lots of plug-in receivers, or controllable outlets, for the various home automation systems. Then all you need is a compatible transmitting switch, possibly battery operated.

Example: I currently have an X10 setup (cheapest home-automation product in all senses of the word cheap; adequate for playing with for now) in my living room where a remote sends signal to a receiver, which puts the signal onto the power line, which carries it to a plug-in on/off/dimmer module, which powers the swag lamp hanging from the ceiling. I could have several other receivers set to the same channel if I wanted other lamps to respond in unison with this one.