There are options. Personally I run Graphene OS on a Pixel 3a. I have no proprietary software (with exception to binary firmware blobs for the modem and other l

There are options. Personally I run Graphene OS on a Pixel 3a. I have no proprietary software (with exception to binary firmware blobs for the modem and other low-level components) installed on my device. All apps are sourced from F-Droid. I've measured very low telemetry data from my device.