If the device is completely locked and official recovery isn't an option, you will likely need to use a tool like or SigmaPlus . This typically involves: Disassembling the device to access the motherboard.
: Often used alongside Chimera for bypassing FRP and Huawei ID on various Huawei models including the Nova Y70. Huawei FRP Eraser Mga Lx9 Huawei Id Remove Unlock Tool