Link old youtube account to a mail account without giving phone?

[Alicia]

I have an old youtube account, created in 2006. After many years, I want to log in and remove a video. However, google doesn't make it easy... They want me to link the youtube account to another email account. If I do it with a gmail, it says "Error 500. Sorry, something went wrong. A team of highly trained monkeys has been dispatched to deal with this situation". What lack of professionalism. If I do it with a hotmail account, it later says to give them a phone so they'll send me a code. No way I'm giving them my phone number.
How can I link the youtube old account to an email without giving a phone in order to access my damned youtube account?.
EDIT: Sam, I don't have Facebook or Twitter, and I don't want to link my youtube account to a google account since they ask for my phone number, and I don't want that. There must be another way around...

[Sam]

>> The message ""Error 500. Sorry, something went wrong. A team of highly trained monkeys has been dispatched to deal with this situation"" shows when your account is connected to Twitter or Facebook.

To solve this issue >>

1. Go to https://profiles.google.com/connectedaccounts

2. Disconnect your account from Twitter/Facebook

3. Restart your browser

4. Link your youtube account to a new g-mail/ hotmail as you tried before.

Edit :

> Go to : Youtube Settings
> Click "Disconnect Channel from Google+"
> Click "I understand that my channel will be renamed."
> Click "Rename Channel."