@jonny

note: I am a tech illiterate

I went to the exif tool website and clearly not somethng I would find easy to use

so I googled
tool to remove pdf metadata

and it seems like there are lots of nice easy to use programs - google chrome has one built in ?

eg

my fav software seems to have a metadata removal/sanitize tool
pdf-xchange.com/search?query=r

and also

tools.pdf24.org/en/remove-pdf-

pdfgear.com/pdf-editor-reader/