Setup Chromecast (networks and apps)

1. Is it possible to set up a Chromecast device for different (>1) WiFi? (a backup plan) 2. Is it possible to set up a Chromecast device for different WiFi and networks? (use in different houses) 3. Is it possible to set up a Chromecast device without using the Google Home app and play? (maybe an F-Droid app)