Usually there is a place for wiring running area at the back.. just need some technique to move the cables..

Your picture have backboard as backdrop which might costly a bit.. usually that's way.. you could drill and put 1 PVC box to conceal it as well in case no budget like me to have backboard..

Usually the bulky stuff like sockets, adapters will be hidden by the TV cabinet itself. To make the TV work (power and few HDMI) you can use the rectangular PVC casing/trunking (wide and shallow) eg 50 x 16 or 30 x 13 mm size or smaller (depending on your requirement of the cables you need), to conceal - smaller is better - just surface grind off the mortar layer of the wall to fit in, can putty and paint over as necessary.

See page 11 for range of sizes available, very cheap at your neighbourhood electrical store.