Lambda issue lsu 4.9 troubleshooting

Hello

I have a problem that I just can’t figure out with my lambda . The sensor just stops working randomly while driving or when restarting the car. The only real solution every time I wanna use it i have to unplug and plug back in while it’s running. I tried new wiring from ecu to sensor . I tried new sensor. I tried a new plug because how knows . Nothing helps . Did anyone encounter something similar? And the ecu think it’s working so it always says yes valid .

Also tried to move it more downward in the exhaust still pre cat