Verizon LTE stopped working

My connection to Vz's mobile data LTE stopped working. Admittedly, it was flaking out for weeks. I would often enable/disable airplane mode to seemingly kick start the service. Usually after using a WiFi connection.

The phone is using LineageOS 15.1 but wouldn't run 16.

Is there anything I can test/verify? Or is it simply time to move on?

SOLVED: A reset of network settings appears to have solved it, for now. It lives to fight another day!! https://www.verizonwireless.com/support/knowledge-base-201785/