Yahoo mail allows you to recover Yahoo mail account without phone number in case if you have forgotten your linked number, for that-
Go to the Yahoo login page and enter the Yahoo email address
After that, you will be asked to enter the password after clicking on Next
There all you need to do is to click on the ‘I Forgot My Pasword’ option appears on the screen
It will check the missing digits of the Mobile Number and there, click on the ‘No I don’t know the Number’ option
Enter the alternate email address to get the recovery code and then, click on the link appeared in the email. Enter your new password and then, you are all done with the password recovery without phone number. If you also have forgotten your email address then, yahoo Helpline number UK to get your Yahoo account recover.