how would you replace the string of text after the find

I am trying to format a string of text that comes after this heading [DIRECTORY].
Example: I have a directory of a folder on my computer that separates each new file with [DIRECTORY] and then the name of the file. I would like to highlight the name of each file.
Find:[DIRECTORY]
Google Drive files
Replace:
Google Drive files (pretend that is highlighted in yellow)
And if I could do that, could I add a hyperlink to the actual content of the file which is located later in the same document?
I don’t know if I am asking too much of Libre Word.
Thank you!