If you have Lost Yahoo account, you can simply reset it and create one from scratch. Password resets are easy with a dedicated recovery email address or mobile phone number. What would you do without them?
In this section, we will show you how to reset Yahoo password without a phone number or backup email.
Navigate to the Yahoo home page and type your Yahoo account registration information. After that, click Next.
Click Forgot Password > I need more options > Visit our help site. You may need to prove again that you are not a robot.
Click "Start" > "Contact Yahoo Experts" > "Password and Sign In" > "Can't Change My Password" > "Email Yahoo Experts".
After sending the email, wait patiently for Yahoo's reply.