add disableDefaultUI: true when creating the map:

this.newMap = await GoogleMap.create({
  id: 'my-test-map',
  element: this.mapRef.nativeElement,
  apiKey: environment.mapsApiKey,
  config: {
  center: {
    lat: lat,
    lng: lng,
  },
  zoom: 15,
  disableDefaultUI: true <-------
  },
});