WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture...
You can set up an external monitoring service to check your website regularly and send alerts. Choose an important public page and send notifications to an email address that does not rely on the hosting being monitored.
Configure alerts to trigger after several consecutive failed checks to reduce notifications caused by brief interruptions. If supported, use checks from different locations and monitor both the HTTP response code and the presence of expected text on the page. A successful HTTP response does not necessarily mean the page is working correctly. Monitoring helps you spot problems, but it does not prevent them.