bootcamp – Can’t find AutoUnattend.xml?

I have followed this link https://apple.stackexchange.com/a/316512/408833 in order to download Windows, and I have reached the part where I need to edit the AutoUnattend file, however I can’t seem to find it on my USB. I’ve tried redownloading the support software and the iso file but still nothing (also tried the terminal command, says the file doesn’t exist). Any help?