My sad family room needs your help!

All those thoughts and answers sound great personally my first thought was that the furniture is too bulky for your room. It weighs it down and causes a huge contrast with walls which doesn't help your room. I would paint as suggested, I would place sofa across the wall and move the chair to where sofa is and hang TV on the wall that is along door. I would place a narrow runner on floor behind sofa since that is a high traffic area and that would allow you to bring in color and texture. I would get a huge piece of artwork for wall across sofa on the wall across window. I would bring some nature in by placing a good size plant or tree where the TV is currently. I would look for a tall table sort of like a sofa console or a display table or even a hutch that you could separate top from bottom and use that under the TV to hold TV stuff. You can find cord cover for the cords that you can paint. Look for a light colored carpet that is large enough for sofa and chair the appropriate size can be found online. It should be light to make room appear larger. The rest of home looks country cottage so carry that look into this room with the furniture you purchase at garage sales or thrift shops by painting them and get the art work also in that theme. Paint pieces In a light color that you can distress with a stain over paint or try that chalk paint and wax combo. OK well that's my vision to open room up yet not get glare from window on TV and to make furniture work by making room appear larger. So darker walls lighter floors and TV on wall with used pieces of furniture that you paint to make it all come together but don't forget nature.

Switch places with the console table and tv, allowing space for entry way. Put the sofa against the wall, opening that area going into the dining area. Put armchair where sofa is now.

Place the sofa on the larger wall and the chair where the sofa was, paint just two walls in a mustard color, the larger wall and the door wall this will start a focal point to the room. Find a larger area rug in multi colors with mustard in it. Add throw pillows To complement the new rug. Purchase a tall and wider console chest and this could be found in a consignment or thrift store for your tv and this will add height to your living space being every this seems to be all the same height. Add a large scale picture/mirror over the sofa but not too high. Add a fake tree in corner. Your coffee table, I would replace with a round table because the current yellow one looks more like a children’s toy box.