Hello! I understand that you need an old Mi account that has been registered for 30 days in the Xiaomi community to unlock the bootloader. However, sharing or borrowing Mi accounts is not recommended as it can lead to security risks and violates Xiaomi's terms of service.
If you are having trouble unlocking the bootloader of your Xiaomi device, I recommend following the official procedure provided by Xiaomi. You can visit the Xiaomi website or contact their customer support for assistance with unlocking the bootloader of your device.
It's important to ensure that you follow the proper procedures to avoid any issues with your device in the future. If you have any other questions or need further assistance, feel free to ask!