Thanks for reaching out. When a channel or account is terminated, you'll receive an email with more details about the reason. If you believe that your channel was taken down in error, please appeal so our policy team can take another look. Here's how: https://yt.be/help/e3Z1
These steps may help you regain access to your account: https://yt.be/help/ReEJ . We recommend doing this from a known device and/or browser that was typically used to access the account. Here are more tips to help you through the process: https://yt.be/help/1SY3 . Keep us posted!