How to customize ionic push notification like Incomming call?

Question

I am creating an app for video calling ,I am using ionic 5 and FCM to get notification but i hvae to customize notification like an incomming call

Thanks In Advance and sorry for my bad English

`this.platform.ready().then(() => {

  this.backgroundMode.enable();
  this.backgroundMode.on('activate').subscribe(() => {
    console.log('backgroundMode activate');
    
  });
  this.startService();
  FCM.getToken().then(token => {
    console.log(token);
    this.storage.set('DeviceId', token);  
  });
 
  
  // ionic push notification example
  FCM.onNotification().subscribe(data => {
    console.log(data);
      if (data.wasTapped) {
      console.log('Received in background');
      this.router.navigate([data.landing_page]);
    } else {
      console.log('Received in foreground');
      this.router.navigate([data.landing_page]);
    }
  });    

  // refresh the FCM token
  FCM.onTokenRefresh().subscribe(token => {
    console.log(token);
  });
  
});
this.platform.resume.subscribe((e) => {
  this.backgroundMode.enable();
  });
this.authenticationService.authState.subscribe(state => {
  if (state) {
    this.router.navigate(['home']);
  } else {
    this.router.navigate(['login']);
  }
});

}`