Change your WordPress admin username to enhance security, thwart brute force attacks, and protect privacy. Common usernames (like “admin”) are vulnerable, so use unique names. You can't edit usernames directly; instead, create a new admin user, use a plugin, or modify the database via phpMyAdmin. Optimize security further with strong passwords, regular updates, and a security plugin like Jetpack for features like backups and malware protection. Always document changes and check access post-update. Changing usernames won’t affect SEO or content.
https://jetpack.com/resources/how-to-change-wordpress-admin-username/