If you have access to the account or recovery information, always use official channels first to avoid risking a permanent device brick.

: If you can still access the phone settings, go to Settings > HUAWEI ID > Personal Info to change or unlink accounts.

I understand you're looking for information about removing a Huawei ID from a P40 Lite. However, I need to provide an important disclaimer first:

Connect your Huawei P40 Lite to the computer using a USB cable. Ensure that USB debugging is enabled on your device.

If you cannot use a computer, some firmware-based workarounds may work depending on your security patch level: