How do you get your first client?

I am trying to start a web development agency. I am struggling with getting my very first client.

I have tried upwork for the past couple of days with no luck.

The advice I've seen online consists of:

• Referrals are king (not helpful in my situation)
• Reach out to your personal network
• Give it away for free
• Charge from day one (yes, I've heard people adamantly advocating for both)

Nobody in my personal network needs a website. I have been a professional web developer for 5+ years, so I know I can do the work, I just can't find a client to do it for.

Basically my question is simple. How do I get my first client?