I would suggest you delete the existing launch configuration , then a debug probe discovery operation will be automatically performed to display the available debug connections.
Please refer to below link for more details.
When powered with the USB in the debug port the yellow LED flashes quickly.
Also, tried using J-Link to connect got
SEGGER J-Link Commander V6.40 (Compiled Oct 26 2018 15:07:23)
DLL version V6.40, compiled Oct 26 2018 15:07:12
Connecting to J-Link via USB...FAILED: Cannot connect to J-Link via USB.