Camera stopped working in macbook pro

MacBook Pro (15-inch, 2016)

Since few days my camera has stopped working. When I open any app which uses camera, I see green light for some seconds and then light turns off and camera doesn't start.

I have tried all steps mentioned here with no luck. I tried resetting NVRAM and PRAM as mentioned here. I faced the issue in catalina and I thought it was because of recent update so I upgraded to Big sur and still face the same issue. Camera does show up in hardware.

Please suggest how can I solve this issue. It surely looks like software/driver issue.