UPDATE 2021-10-11: Added Excellent [APKGrabber] ▓ ALTERNATIVE FIRMWARE As for firmware, I recommend to use [LineAgeOS] if your device is supported. Neat FW with minimal tracking and no bloat from big corps. If there is no native LineAgeOS support check [XDA forum threads] for unofficial ports by community enthusiasts. If your device is not supported in both cases I do not recommend to update stock firmware to prevent bloat’n’telemetry installation.