Access to plugin variables | WordPress.org

Hello.

How can I access your plugin’s variables?

I would like to download the car list view and display it on a php template page.

I tried including the main plugin files in the template:

include_once ABSPATH . 'wp-content/plugins/vikrentcar/autoload.php';
include_once ABSPATH . 'wp-content/plugins/vikrentcar/vikrentcar.php';
include_once ABSPATH . 'wp-content/plugins/vikrentcar/defines.php';

Then I placed the loop code in the page template, which I copied in the location below, but I only have a white page.

wp-content/plugins/vikrentcar/site/views/carslist/tmpl/default.php

Can you tell me which files can be included to access all plugin variables?

I would like to build my own view with a list of cars.

I managed to implement my search results template without any problems, but now I would like to build the same view to display a list of cars on the website.