Trouble logging into WP dashboard

I’m having trouble logging to the WP dashboard for our website. I input the correct username and password but get redirected back to the login page. I’ve tried the following:

– clearing the cache and cookies
– checked for plugin and theme conflicts by renaming the folders
– added the following to the wp-config.php file: “define(‘WP_SITEURL’,’https://www.yourdomain.com’);
define(‘WP_HOME’,’https://www.yourdomain.com’);”
– resetting the .htaccess file
– tried creating a new login through the wp_users table
– checked the siteurl and home entries in the wp_options table

At this point nothing has worked. I still can’t login. Can anyone suggest another method I can use to login to the dashboard? Or does anyone have an idea what could be wrong?

Thanks!