How to set up a subdomain, what am I doing wrong?

Question

Apache HTTP Server

I bought a VDS, I want to set it up myself I
stuck it at the stage of creating subdomains
This is how the /etc/apache2/apache2.conf file looks like

<Directory /var/www/>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
</Directory>

Then I made 2 copies of the 000-defaults.conf file, the contents of one of them are:

<VirtualHost *:80>
        ServerName tireplaces.musaevhs.info
        DocumentRoot /var/www/tireplaces
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

and so - the main virtual host (000-default) normally reflects the contents of the / var / www / html folder (it is configured there), but the subdomain does not want to be cut.
What did I forget or did wrong? ..
PS sudo a2ensite tireplaces.conf did by itself