For this video I used AOSP based rom named
Alphadroid 1.8 for Miatoll
You can find this ROM on this Telegram group
https://t.me/miatoll

or direct link Vanilla version
https://dev.miuiflash.com/what-is-sup...

This is the new method for root device.
https://kernelsu.org/

KernelSU last version you can download here
https://github.com/tiann/KernelSU