Rom Oppo A37f Android 60 Top

LineageOS 13 is the gold standard for Snapdragon 410 devices. This unofficial build for the A37f is optimized for the 1.5GB RAM limit. It removes all Oppo bloatware, freeing up nearly 400MB of RAM.

Oppo locks bootloaders on most devices. For A37f: rom oppo a37f android 60 top

In TWRP:

Flash a camera fix patch (search for camera.msm8916.so patch). Or install Open Camera from the Play Store, which bypasses HAL bugs. LineageOS 13 is the gold standard for Snapdragon 410 devices