Thank you .. i dont know what i did .. but i just kept repeating the steps and i got there. However, when flashed it .. it came up with an error message "FAILED (remote: Flashing is not allowed in Lock State)". Do you know what this is?You must have a driver problem and not have the drivers installed correctly.
Follow this guide https://www.xda-developers.com/install-adb-windows-macos-linux/
Just did a google, does it mean i have to unlock my bootloader? https://unlocktechy.com/unlock-bootloader-xiaomi-mix-fold-2