[Question] how to sell/buy monetized youtube channels?

disclaimer: I am not selling anything.

As I understand it, when you monetize your channel, your AdSense account, email address, phone number and physical address (for tax purposes) become associated with the channel. If I had a monetized channel and wanted to sell it, how can I ensure that the buyer won't have access to my personal address or email? Does youtube even allow changing channel owners? Thanks!

Yes, YouTube allows changing the email. You can thus safely make deal with buyer.

Make the channel on a new gmail that you are ready to share with buyer. Do not make it on personal mail.