Hi, I am Dave, I will help you with this.
When you reach the part of the setup that requires a network connection, press Shift + F10 to open Command Prompt.
Run this command in Command Prompt and press Enter: OOBE\BYPASSNRO
When your PC restarts, if Command Prompt opens again, close it, then you should have an option to skip setting up a network, then when setting up the user account, select the option 'I do not know this person's details' to set up a local account.