Having a WordPress site let’s everyone know that your admin login url is usually something like https:/your_domain_name.com/wp-admin.
So to assist in helping to hide this important URL, you can install a Plugin called WPS Hide Login.
Once you install it and activate it, you can go to your Plugins Page and Click on the Settings and create a new URL to login under.
BUT when you change it, make sure that YOU remember what it was as you could go hiding it from yourself.
If you do, you can always log into your CPANEL and File Manager and rename or remove it.
OR you could go into your CPANEL and access your WP Database using phpmyadmin and see what the current setting is or change it.
This is what is called Security by Obscurity and while it’s not the most effective against someone who knows what they are doing, it will help the scanners etc pass your site.