Home designers? Need help

A

We just moved around so the living room is completely destroyed at the moment, I know it’s gross. We also have 3 kids. But I need help on how to decorate. We have light brown carpet, dark brown couch, light brown stand and one big brick wall. All other walls are white. The doors are dark brown as well.

I have NO idea whatsoever how to decorate this room. It looks boring and sad. We will be hanging pictures on the walls. We can’t paint or get new furniture. So what can we do? What colors should I get? A rug? Throw pillows? Any advice would be nice. This house is depressing lol.