Update LineageOS on Xiaomi POCO X5 5G / Redmi Note 12 5G / Redmi Note 12R Pro

Using the LineageOS Updater app (to newer LineageOS builds)

Open Settings, navigate to System, then Updater.
Click the Refresh Icon in the top right corner.
Choose which update you’d like and press Download.
When the download completes, click “Install”. Your device will reboot to recovery and install the update, then reboot to the updated installation.