On Ubuntu 22.02. all apache config files are exist under available directory and you need to enable them by running a2ensite 000-default.conf

/etc/apache2/sites-available/000-default.conf
--------------------------
<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    # Permissions settings
    <Directory /var/www/html>
        # Allow access to the directory and its content
        Options Indexes FollowSymLinks
        AllowOverride All

        # Allow only certain methods for security
        Require all granted
    </Directory>
</VirtualHost>

For subdomains