How do I disable screen mirror

Hello, DebStoh85.

Thank you for using Apple Support Communities.

From your post, we understand you want to turn off screen mirroring. You can turn off screen mirroring from the steps in this article: Use AirPlay to stream video or mirror your device’s screen

"To stop mirroring your iOS or iPadOS device, open Control Center, tap Screen Mirroring, then tap Stop Mirroring. Or press the Menu button on your Apple TV Remote".

If this isn't the case, let us know in more detail of what's happening. We'll go from there.

Cheers!