after switching the ssl certificate not log in successfully wp-admin?

Add the following lines to your wp-config.php file, replacing the example.com with your domain name:

define( ‘WP_SITEURL’, ‘https://example.com/’ );
define( ‘WP_HOME’, ‘https://example.com/’ );

Access your site once then again delete these two lines.

Hopefully this will resolve your issue.