If you want to have gray walls with your beige carpet and red accents , you might want a brown sofa. Your beige carpet is going to direct your color scheme. You can also do dark gray sofa, light gray walls with brown and teal ( or aqua ) accents and add a pop of orange.

Here I painted your sofa brown and gave you a less purple gray wall:

Here I gave you a gray sofa, gray walls, brown media console and teal and orange accents:

your 2nd pic looks so nice because my screen sees the couch and teal.