HWV32 P20Lite Japan au KDDI.Android v8.0 BootLoader UNLOCK SIM UNLOCK Please tell me the procedure

[junkey]

HWV32 P20Lite Japan au KDDI.
Android v8.0

I am very in trouble.
It can't be done any number of times.
Please tell me the detailed procedure of BootLoader UNLOCK. And SIM Unlock

Thank you.