Hi, thanks for reaching out. My name is Bernard a Windows fan like you. I'll be happy to help you out today, my timezone is UTC +8.
I understand the issue you have, there is nothing to worry I am here to help, this error happens when there is an internet connection problem or the PC doesn't meet the system requirements, I suggest running a PC health check just to check if the PC is capable of upgrading:
https://aka.ms/GetPCHealthCheckApp
If the PC passes the system requirements and all is good in the PC health check, I suggest doing an in-place upgrade wherein it will upgrade the device to the latest version and repair all issues without deleting any files.
Kindly follow the steps from this link:
https://answers.microsoft.com/en-us/windows/for...
Let me know how it goes and I hope that helps.
Bernard