My cell drops calls and has voice gaps at home on Wi-Fi

My voice conversations on my cell at home is a constant frustrating battle of gaps in voice (can you hear me repeatedly used), dropped calls, and calls sometimes not ringing thru, and when the call is dropped I have learned the only way to get my call ability back is to restart my phone.

My cell phone is not old, I keep the software updated, I make my calls within 6 feet of the Xfinity wi-fi box in the same room.  Also, no other devices are being used, the printer is USB connected to my laptop as to not use WiFi.  Also, I have tested the WiFi in my home and my cell constantly has “Strong” WiFi.   We do have multiple devices in the home (WiFi speakers, laptop and smart plugs) but we are not heavy users.  When I am on the phone - no one is to use their cell or speaker, this doesn’t seem to help.  I have sent many of my call feedback using the google reporting app.