Unlocking the bootloader on Huawei devices has become significantly more difficult since Huawei officially stopped providing unlock codes in 2018
Unlocking your bootloader is not a risk-free process and carries several permanent consequences: Unlock Bootloader - HUAWEI Community huawei bootloader unlock code free
This is a popular open-source tool for older Kirin-based Huawei devices (e.g., Kirin 620, 650, 659, 960). It works by using a "testpoint" method, which requires you to physically open your device and short a specific point on the motherboard while connecting it to a PC. Completely free and open-source. High risk of hardware damage; requires opening the phone. MTK Client Tool (MediaTek Processors): Unlocking the bootloader on Huawei devices has become
Huawei stopped providing free codes to "ensure a better user experience and security" and to prevent issues caused by custom ROM flashing. Permanently discontinued for all devices. High risk of hardware damage; requires opening the phone