Sounds like you’re just copying a template to new files based on a csv? You don’t have to edit anything inside the word files at all?
If that’s the case, just load the csv file, I think the command is Read-Content, loop through each line, split by ‘,’ parse whatever name data you need and copy your template.docx to your new file.docx
I remember seeing a video with the exact same premise, except I think it was a bunch of British actors