I cannot see myself.

I initially added a virtual background but when I removed it, my camera is just black.  I do not know how to default it back so I my see myself and others can see me when on zoom meetings.  Please help and thanks.

I have same problem

My video is on but screen is black on mac book and it says background loding, what happen. 

Until today I’ve had a picture of myself there, but today I lost that