Keep your WordPress regularly updated to make sure you can protect it from vulnerabilities.
Ensure that the passwords on each of your user accounts are secure. It assists in guarding against unwanted access to your account.
Do not allow a single IP address to attempt more than one login attempt. By doing this, brute force attacks are thwarted.
Security plugins can provide comprehensive protection for your WordPress site. Plugins offer features like malware scanning, firewall protection, and security hardening.
Make the regular backups of your website so that in case of data loss or security breach you can easily recover it.
You should regularly monitor user activity to spot any unusual activity. There are many plugins that provide you with detailed logs of user activity.