i can't use apple tv remote on iphone.
I try to use apple tv remote app but it's continuing searching. how should i connect to apple tv without apple tv remote
What is your model Apple TV? Identify your Apple TV model - Apple Support
The iPhone should be connected to the same (Wi-Fi) network.
The Apple TV Remote widget in Control Center (iOS 11 or later) is compatible with Apple TV (3rd generation or later) (Apple TV Software 7.5 or higher).
Set up the Apple TV Remote on your iPhone, iPad, or iPod touch - Apple Support
The Apple TV Remote app from the App Store is no longer available, but should still work if you already have it. The app would be compatible with Apple TV (2nd generation or later).