The Xiaomi Mi A3 may be set to receive native screen recorder functionality with Android 11. However, it looks like the Mi A2 and Mi A2 Lite will miss out.
https://www.notebookcheck.net/Xiaomi-Mi-A2-and-Mi-A2-Lite-are-unlikely-to-get-native-screen-recorders.483496.0.html
It is sad to see that modern phones - so called "smart" phones do not have the feature which had my 11y old Nokia N82!