Pixys has made a custom ROM based on Android 10 available for the Redmi Note 8 and Redmi Note 8T. Owners of these smartphones have endured a rollercoaster ride in regard to the eagerly awaited operating system update, with the official software from Google now being delayed by Xiaomi because of major bugs.
https://www.notebookcheck.net/Redmi-Note-8-and-Note-8T-owners-can-try-out-a-custom-version-of-Android-10-thanks-to-Pixys-OS.477976.0.html