The first thing she learned was that Huawei's bootloader wasn't just locked. It was cryptographically sealed with a unique key per device. In the old days, you'd email Huawei, prove you were a developer, and they'd email back an 16-digit code. Then, in fastboot mode, you'd type:
Because the official path is closed, users must rely on unofficial, often paid, third-party methods. How to Unlock Bootloader in HUAWEI P30 Lite phone
Newer firmware (EMUI 10/11) has patched the exploits. The first thing she learned was that Huawei's
(Replace [YOUR_UNLOCK_CODE] with the alphanumeric string provided by the third-party service). you'd email Huawei