Is it possible to change my Youtube account name to my own without having to connect with Google Plus?

By default, your Google+ username is also your YouTube username.  But you

can change your YouTube username.  Just remember you can only do it once:

1 - At the top-right of your page, click the ▼ beside your avatar

2 - Then from the drop-down menu, click on ''YouTube Settings"

3 - Alongside your big avatar display there, click on "Advanced"

4 - If you've got a wacky-looking "Channel URL", click on "Create custom URL"

5 - In the box, type in the username you want, then click "Create custom URL"

6 - Your original name will temporarily still be on the ''Overview'' page, but click

     ''Return name to [your new username] and disconnect from Google+ profile"

     and then click "OK"

You'll now see that your username "AND" channel name have indeed changed.

:-)

Remember:  you can only do this once and can never change username again.

There should be an option when you sign up for a YT account that you don't want your name to be your google+ name.