Rear Fog

Hello, when my partner car turns on the rear fog, it just lights up on the left, but after 3-4 seconds it goes out by itself. It never goes out at an angle again, but this time dr is overheating. The right side never lights up. I tried with different bulbs, it is not lit again. Also, it stops spontaneously when it gives a signal, the signal continues when it opens the fog. A very strange problem is there anybody living like this

hello can you disassemble and see if there is oxidation