Hi @KOLDY (Brian), I still use the G5 with an unsupported phone and have had zero issues with the app mentioned above. My spouse has a Pixel 3 and the app works flawlessly.
The same group that did the G5 app that I am using has a G6 version. Basically it’s the official G6 app with the Google Play store restrictions and Dexcom server device compatibility verification checks removed (bypassed). If I were in your situation and wanted the official app (at least until Dexcom certifies the current Pixel series) this is what I would use. The only viable alternative IMHO would be XDrip+ on which @docslotnick is the resident expert. The only drawback to XDrip+ that I am aware of is that it won’t “talk” to the Clarity servers - and I might be very wrong about that. There are continuous updated iterations of XDrip+ and when I was using it , it was far far better than the Dexcom app.