I know this is stating the obvious, but that error means that there is no user registered with email address. ?? It’s possible that you entered the email incorrectly and didn’t realize it. If you remember the correct email address, then you can reset the password using the lost password link form the wp-login.php page. If for whatever reason it won’t recognize any emails that you try, then you can look in the database and see what you entered (and even change it there if you’re careful).
You can read more about that here under the “Edit Users Table” https://codex.www.ads-software.com/Login_Trouble

I hope that helps. Good luck!