The guide is correct, apart from the last step that you get the orange state warning. At this moment you need to press once the power button to continue. Then when you get into the recovery mode you need to wipe everything. Both wipe and format. Then the phone will boot normally with unlocked bootloader.
when the process is finished, you will have to go to '' start the in-depth-test '' and you will see the bootloader screen
step 3 : Go to your computer and open a command window in the folder where minimal adb is located
write these commands:
Fastboot flashing unlock
Step 4 : A black screen asking if you really want to unlock the bootloader will appear, with volume up or down, you select (select '' yes '') Vol UP
after that, the cell will freeze on a screen with some writing, don't be alarmed it's normal!
Just hold the power and volume button up and your phone will restart with the bootloader unlocked
I hope I have helped you!
tutorial by Victor Eduardo
~ Realme 7 5g Brazil (Telegram community) https://t.me/Realme75GBR
Sorry for my bad english :3