@kzimmermann
@calyxos has support for a few devices (not just pixels) and supports microG and bootloader relocking out of the box. very easy to install as well. been using calyxos for a few years now, and would definitely recommend it jf you're trying to degoogle your phone!
@kzimmermann or check out this project: https://github.com/0x192/universal-android-debloater
if you just want to degoogle your current phone. from my experience, it works great and is very easy to use as well!
GitHub - 0x192/universal-android-debloater: Cross-platform GUI written in Rust using ADB to debloat non-rooted android devices. Improve your privacy, the security and battery life of your device.

Cross-platform GUI written in Rust using ADB to debloat non-rooted android devices. Improve your privacy, the security and battery life of your device. - 0x192/universal-android-debloater

GitHub