Since the RTX 3060 was not installed when the YOLOv5 6.2 module was installed it is configured for CPU.
To have it configured for the RTX 3060 you need to uninstall the YOLOv5 6.2 module then reinstall.
I have the same RTX 3060 GPU in my main BI system and the YOLOv5 .NET using DirectML is...