You can download Google Camera 6.1 APK (GCam_6.1) for Redmi Note 8 Pro from the below link. Though older version, GCam 6.1 features Night Sight mode, HDR+, Lens Blur, Panorama, Portrait, Photo-Sphere, Photo Booth, and Slow Motion. The current version of Google Camera 7.2 port only supports Android 10 and Snapdragon devices. Redmi Note 8 Pro is a MediaTek device. Google Camera 6.1 stable version (MGC_6.1.021_Rn8ProEdition_1.0) and testing version for Redmi Note 8 Pro is available for download. You can download and install the GCam APK on your device without any special requirements.
How to install GCam 6.1 APK on Redmi Note 8 Pro
To get the best performance from your Google camera, you need to make a few changes in the camera settings. For this purpose, use Wyroczen’s config file (download wyroczen_rn8pro_3.xml file from source). To use it, create a folder named GCam on your phone and inside it create folder named Configs. Save the wyroczen_rn8pro_3.xml file inside it. Now, open the Google Camera app and tap on the image preview window. A window will pop up with a restore option. Tap on restore to restore the configurations.