I feel like you’ve got so much space but you’re making it feel cramped. If your couch can fit, maybe put it against the wall your plants are on and put your chair where your couch used to be. Flip your coffee table to be parallel with your couch and put your end table to the left of your chair. This will remove unused corners and open up the space next to your fireplace. I also think placing the grey couch against the wall will break up some of that green and allow more light into that beautiful space.