Zoom Self View when Speaker

All of a sudden, when I sign on to my Zoom account to start a meeting, my picture/video automatically gets pinned as soon as people sign on.  I can't unpin myself and be in the full screen view on my phone.  How can I undo this?  It doesn't matter whether I am the host or not, it defaults to pinning my self view.  I teach yoga, so I need to be able to see myself in a full view on my phone, while I watch the students on my laptop (which is also signed in).  Thank you.