What are the best practices to prevent HTTP Error 500s from occurring on a 000webhost website in the future?

To prevent future HTTP 500 errors on 000webhost, regularly back up your website. Always test significant changes (like plugin updates, theme changes, or code modifications) in a staging environment if possible, or at least have a recent backup. Be cautious when editing your `.htaccess` file, ensuring correct syntax. Maintain proper file and folder permissions (644 for files, 755 for directories). Optimize your website's code and assets to stay within 000webhost's resource limits, and keep your CMS and plugins updated to compatible versions to avoid PHP-related issues.