YouTube permanently suspended my account due to 3 copyright strikes on private videos.

YouTube permanently suspended my account due to 3 copyright strikes on private videos. When I reached out to the email address associated with the takedown requests, I didn’t receive any response. Additionally, YouTube support is ignoring me—both through the official form and their email address (copyright@youtube.com). What can I do to get my account back? It seems there is no human support to talk to, and now all 200 of my videos might just disappear.