Before you can mirror your mobile device or computer screen to your Fire TV, you have to activate your Fire TV's mirroring feature. Navigate to the home screen on your Fire TV by pressing the Home ...
To mirror your Android's screen, you'll need a Chromecast, a compatible TV, or a third-party app like Tenorshare Phone Mirror.
You can turn on AirPlay to use on your Mac computer through the System Preferences app's "Displays" menu.