meta_query argument not working

I am trying to use WP_Query to search through posts BUT I want to also search by post_title as well, which is why I tried using meta_query in my arguments array. I want to actually do more than just search that field but also fields from using the get_post_custom() function.

When I use the meta_query argument it doesn't return any results.

Here is what I have so far:

$args = [
            'post_type' => 'listing_type',
            'posts_per_page' => -1,

            'meta_query' => array(

                array(
                    array(
                        'key' => 'post_title',
                        'value' => '"'.$this->vals['name'].'"',
                        'compare' => 'LIKE',
                    )
                )


            )

        ];

        $q = new WP_Query($args);

and when I try and get values via using this loop below, nothing is returned:

        <?php   if($q->have_posts()): ?>
        <?php while($q->have_posts()): $q->the_post();?>
        <?php
            $custom_fields = get_post_custom(get_the_ID()); 
            $featured = $custom_fields['featured'][0];
            $front_page = $custom_fields['frontpage'][0];
            $img = $custom_fields['image'][0];
            $location = $custom_fields['map_location'][0];
            $src = wp_get_attachment_image_src(get_post_thumbnail_id($q->ID), array(300,300), false, '');

            the_title();
        ?>
        <?php endwhile; ?>
    <?php endif; ?>

and I am searching using keywords I know are in the title of my posts and nothing is still showing up