Twoyi is a lightweight Android container. It runs a nearly complete Android system as a normal app (no root required) on Android. Additionally, it supports Android 8.1 ~ 12.
Disclaimer: I do not own this application or tool. I'm just here to share it, but you're free to support the developer. The tool/application's working capability and other issues depend on keeping the project alive by the author. Use it at your own risk.