It sounds like you might be experiencing a known limitation. To confirm, we'd need the version of macOS you're using.
Please note that Teams running on Azure Virtual Desktop (AVD) has some specific requirements and limitations:
Client Updates: If Teams is installed per-machine on your virtual desktop, it doesn’t auto-update like standard Teams clients. Updating requires installing a new MSI on the virtual machine image.
Media Optimization: Teams media optimization is only supported on macOS 10.14 or later, or on Windows 10 or newer. Optimized media allows smoother audio/video calls, but without it, you may encounter reduced functionality—like seeing fewer video feeds.
RemoteApp Limitations: Media optimization isn't supported for Teams running as a RemoteApp on macOS endpoints. This could contribute to the video feed limitations you’re observing.
Please share your macOS version, and we can help confirm if this is impacting your Teams call experience.