My moto g6 play will not use wifi for out going calls....How to fix?

It always tries to use weak cellular service.

The Republic Notification which shows the current condition of your network connection will rule how your phone calls are routed (cell or WiFi)
A good starting point:

  1. What does the Republic Wireless Notification say
  1. Run the Diagnostic test from Republic Wireless App / (?) / ‘Run diagnostic Test’ … if any warnings or failures, please post screenshot. You may see something like this
    image
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