Is it necessary to show face to get clients?

I'm 17 and have been trying to start my GHL agency for a couple of months. I watch a lot of YouTube and read ton of reddit posts and haven't seen anyone address this specific topic. Because I'm too young I can't build credibility and trust by showing myself and tell about my agency to business owners. So I prolly can get a lead through cold DM/Email etc. but I will struggle to close them, I'm afraid that if I get them on a Zoom call, they’ll just laugh because I’m practically a kid. Have anyone encountered the same problem? If yes, how did you solve it? I'd appreciate any piece of advice