I would put your chairs on the opposite side, facing towards the entrance and buy a long bench seat for along with window with space underneath for toy storage. It looks like you need entry storage? Maybe try your small table beside the TV so you have a drop area for purse/keys etc as you enter if there is room?

First I would try to reposition the furniture (see plan). I don't have any dimensions so just going by your photos but try moving the sofa more centered on the wall and move the tv also further up on the wall. That might leave room for you to place a coat tree for storage at the entrance.

Then a larger rug (the one I show is from Ruggable and goes in washer/dryer), accent pillows to coordinate with your gray/yellow colour scheme, A bench under your window with a few accent pillows and would work giving you extra seating plus storage. The one I show is a Kallax from Ikea.

Thank you ! Won’t the yellow sofa chairs be too bulky to place in the middle of the room ?