When saving a text document in LibreOffice, there is no option to save it as PDF.
File>Export As>Export As PDF... Menu.
Why not as Answer?
@LeroyG, you can? Try it! Do it!
Thank you, ebot.
How can I post your comment as an Answer?
@LeroyG, very simple, write an answer. Not my answer. Your answer!
Go to File, Export As, Export as pdf.