Can Apple TV be chrome casted?

No. Apple’s own wireless streaming protocol AirPlay is what’s supported for Apple apps and services.

This requires an AirPlay-enabled TV, or an AirPlay-enabled connected streaming device at the receiving end.

List of AirPlay 2-enabled smart TVs - Apple

And of course the Apple TV box (4th generation or later) supports AirPlay 2.

All the ways to watch in the Apple TV app - Apple Support

for devices with the Apple TV app (no need to cast at all).