Use WP_Query() arguments to return current post/page

I find myself in a strange situation where I need to add the argument "facetwp => true" to a WP_Query loop that returns the current post/page. However, in all of my research I cannot figure out a way to use arguments to return the current post/page. I found some references to using rewind_posts() in order to loop back and match the current ID, but it was all too technical and didn't have examples.

I know that WordPress gets the content for the current page by default, but I have a unique setup where I'm relying on Oxygen Builder, ACF, and FacetWP with Latitude/Longitude fields in ACF (not the Google Maps field) in order to populate a Google Map on single custom post pages. I cannot get the Map Facet to identify the proper query on this page, so I am trying to add a custom code block with "facetwp => true" that returns the current page so that it recognizes the correct query.

For example:

<?php
$args = array(
    'facetwp' => 'true'
     // Additional arguments to return current post/page
);
$query = new WP_Query( $args );
if ( $query->have_posts() ) {
    while ( $query->have_posts() ) {
        $query->the_post();
    }
}
wp_reset_postdata();
?>

I can find all kinds of ways to return other posts/pages using additional arguments, but no luck returning the current page. Can anyone help?!?

EDIT: Now that I re-read my question. It’s not that I need to use arguments to call the post/page, I just need the “facetwp => true” argument to be in the loop. I can rely on any other method to return the current post, it doesn’t have to be arguments that achieve this.

EDIT 2: More research. This seemed somewhat promising but isn't working correctly. Anyone have any thoughts?

<?php
global $wp_query;
$current_post_id = $wp_query->post->ID;
echo "The current post ID is: " . $current_post_id;

$args = array(
    'post_type' => 'court',
    'posts_per_page' => 1,
    'post_in' => $current_post_id
);

$related_posts = new WP_Query( $args );

while( $related_posts->have_posts() ):
    $related_posts->the_post();
// The Loop
        echo '<li>' . get_the_title() . '</li>';
endwhile;
?>

Your suggestion worked @EmielZuurbier!

<?php
global $wp_query;
$current_post_id = $wp_query->post->ID;
echo "The current post ID is: " . $current_post_id;

$args = array(
    'post_type' => 'court',
    'posts_per_page' => 1,
    'post__in' => [$current_post_id],
    'facetwp' => true
);

$related_posts = new WP_Query( $args );

while( $related_posts->have_posts() ):
    $related_posts->the_post();
// The Loop
        echo '<li>' . get_the_title() . '</li>';
endwhile;
?>

I was able to get it working using the above code and the suggestions you made. Thank you so much!!!