I'm 15. I made a YouTube channel when I was 12

I made a channel when I was 12 and people in my school bully me cause of it. That was on my iPhone 4 and now I have a iPhone 7. But I don't know the email/password. Is there a way that I can call google/YouTube to delete my old channel/videos.

I can picture you telling them you were underage when you made your little kiddie you tube channel… And OMG other little kiddies made fun of it… ( oh by the way… Little kiddies make fun of all kinds of stupid things )… Grow up… Move on… Learn a lesson…