https://www.rootmeguide.com/xiaomi-mi-8 … mera-gcam/
https://rootmygalaxy.net/mi-8-mi-8-pro-mi-8-ee-gcam/
https://www.xda-developers.com/google-camera-port-hub/
How to install and use Google Camera Port
Make sure your device supports the Camera2 API. Here’s our guide on how to check if your Android device supports Camera2 API.
Besides the Camera2 API, Google Camera also requires Google Play Services to run. The app will crash if you try to run it on a phone without Google Apps. You can, however, use MicroG orGcam Services Provider to spoof Google’s proprietary libraries.
Download the most compatible APK file of the ported Google Camera from the next section and install it.
Either use one of the suggested versions for your device or pick one of the generic mods.
You may need to install additional XML configuration files.
Restart the app.
Success!