Using a MySQL database management tool like phpMyAdmin from your hosting control panel, you can view the list of users in your site’s database, and reset the password. See the how-to guide below:
I am trying to log into my WordPress but it says “user does not exist” when I input my username So I can’t login into my original WordPress account. What should I do?
As noted above, use PHPMYADMIN. It’s not part of WordPress — it’s part of your hosting. Contact your host if you can’t find it on your hosting control panel.