Additional meeting and call-related features and issues within Microsoft Teams for Education
I came to this site because I was having the same problem. I had the self-view when we first started using Teams, but it disappeared. I played around with all of my settings, but nothing worked. I finally got it back by turning on a background. When I turned the background off, it was still there. YAY. If that doesn't work, you might try Ctrl Shift O (which is the command to turn your camera on and off). Clicking the camera icon on and off didn't work for me, but the keyboard command might.