Okay this is the defacto thank you thread.
I can't recall who told me about it, but someone on the forum mentioned "wifi calling" to cure my poor cell signal issues and missing half my incoming calls and not being able to hear most calls I get because of the signal is so bad the voice is garbled.
Well, after running my errand this afternoon I finally got around to getting a new sim card to allow me to use wifi calling, and set it up with my provider.
So to whomever you are, and it was likely more than one of you, Thank YOU so much. Within mere minutes I got my first call, "suspected spam"
But within just one more minute I got a call from my brother, who I can never normally converse with due to terrible call quality... but now, clear as a bell. So sincerely, thanks to all the helpful people on this forum.