Too many small things on the walls. Take the shelves off the wall behind the sofa. Move the TV over there then turn the sofa to face TV. Use the trunk as a coffee table. Why don't all the sliders have curtains? Are the yellow walls staying? Are the curtains gray? The table and shelf between the sliders are too much. Do you have a wider table? Art would be better on that wall. Remove the word art that is dated.

As was mentioned remove the hanging shelves and replace with art .Turn off the overhead lights and use lamps only. That will give your space a warmer look. Yes, the TV must be moved to the wall as suggested.

To me. It’s the texture on the ceiling
I’d get a quote on covering it over / removing it.
Then I’d replace the fans with new lights