Mirror my android phone

You can’t, not out-of-the-box. Your Android will do Chromecast and perhaps other streaming protocols, but I think not AirPlay. The Apple TV box will receive AirPlay streams, but not other streaming protocols. It is not compatible for this.

There are third party Android apps that claim bringing AirPlay functionality, but I don’t know how reliable or complete they are. They’re unofficial, that’s for sure.

You would need to find an app that allows an Android to stream using airplay. They may/may not work as intended.