How can I reach local file instead of controller url having app deployed on apache2?

See more:

Apache

Ubuntu

Configuration

My web app is running after being deployed on Apache2 (local OS is Ubuntu 18.04 LTS). There is a plethora of controller-related urls like localhost://get_id/<id> or localhost://delete/<id>. Whenever I enter them into search mask, page of my we site appears here, well. What brings me into misunderstanding is a problem of opening any local file inside Apache root directory (/var/www/html) instead of getting content by urls. To be more specific: I have file `sample.txt`> within directory /var/www/html/samples. Now I need to display what this file contains but after typing localhost://samples/sample.txt (suggesting that localhost file source is just /var/www/html) it fails to show anything like sample.txt though Not found.
Virtual host configurations are defined as below:

<VirtualHost *:80>
    
            ErrorLog ${APACHE_LOG_DIR}/site-error.log
            CustomLog ${APACHE_LOG_DIR}/site-access.log combined
    
            <Location />
             ProxyPass unix:/var/www/html/site/site.sock|http://127.0.0.1/
             ProxyPassReverse unix:/var/www/html/site/site.sock|http://127.0.0.1/
            </Location>
</VirtualHost>

I see clear it's a case of missing configuration for a virtual host - which exactly? I was looking for any earlier posts, questions and answers (that's pretty simple issue, so it was responded in the past, I'm sure), but without success. Let me note I'm a newbie to server technologies like Apache, my experience doesn't enable me to solve that matter myself so far. So, how do I want to implement file paths instead of web site url, essentially? Any pointer will be kindly appreciated.

What I have tried:

I was looking for any earlier posts, questions and answers (that's pretty simple issue, so it was responded in the past, I'm sure), but without success.