Xiaomi Redmi Note 9 5G and Redmi Note 9T (cannon) for /e/OS-T 1.18
e-1.18-t-20231223-UNOFFICIAL-cannon.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/XiaomiSmartphones/e-1.18-t-20231223-UNOFFICIAL-cannon.zip/download
Please see sources and install instructions including recovery here:
https://xdaforums.com/t/rom-android-12l-unofficial-ota-lineageos-19-1-for-redmi-note-9-5g-and-redmi-note-9t.4484169/
Use it at your own risk!
Please support the developer(s)!