How do I network when I don't know anybody?

This may seem like a stupid question. But I don't really talk to people much for fun so talking to people for professional reasons is even more difficult and confusing

I know the typical reach out to the recruiter on LinkedIn or something. But what do I even say to them? I feel like I need to have something to offer them before I start asking for "favors" and I don't

Let's assume I'm inquiring about a job within a company but haven't applied yet and I'm trying to boost my chances of getting hired

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