Circumvention policy usually means one thing: you got linked.
YouTube thinks you're a repeat offender trying to bypass a previous ban. If you’ve had a channel deleted before on the same IP, phone number, or even the same PC, their Relatedness system flagged you.
Since they already rejected your appeal, that channel is 99% dead. Don't waste your time trying to get it back. Your only move now is to go stealth—new device (or antidetect), new 4G proxy, new phone number, and zero connection to your old accounts. If you try to open another channel on your current setup, it’ll be gone in a week too.