There are several ways of hiding TV wires. The cords can be zip-tied and concealed behind the furniture, fixed on the wall and covered, or hidden in the wall.
The most common solution is to zip-tie the cables and hide them. This method costs nothing but your time to organize the cables neatly.
One step further is to consolidate all the cables and fix them on the wall in straight lines, vertically or horizontally. Pre-made cable covers can be used to maintain and cover the bundle of cords on the wall. Those covers can even be painted to blend in with your décor.
Finally, the in-wall cords hiding solution is the high-end solution that consists of running all the cables in the wall. When done right, the TV mounted on the wall should appear cordless. Pre-made kits are available for this purpose, but special skills are required for a clean and successful result.