Ring Alarm Pro with Google Fiber?

The Ring Alarm Pro is designed to replace the router, but with Google Fiber all I have is the Google Fiber and a Net Wifi with range extender. Can I plug the Ring Alarm Pro into the Nest for internet and forego the eero Wi-Fi 6 router and retain my existing network? Does the Ring Alarm Pro actually require the eero Wi-Fi 6 router to function? I am looking at the Pro over the prior versions because it can save video locally so I’ll need the Pro for this option. I have read the installation manual, the user manual and seen several YouTube videos on the setup process and cannot find an answer to this.