Problem with citations

Hello, everybody,

here’s the problem:
I want to insert a quote, but I don’t see any that I could choose from. I have the feeling that my library is not linked.
Can anyone help me?

Best regards and thanks in advance

A citation or a “quote” – I don’t think we have enough information.  Online, desktop?  Can you see your library?  You usually would paste in or type a quote and then cite it?