WP Query order posts not working

To sort by title in ascending order (alphabetical order), you can use orderby => title and order => ASC:

$args = array(
    'post_type' => 'marketing_en',
    'orderby' => 'title',
    'order' => 'ASC',
    'tax_query' => array(
        array(
            'taxonomy' => 'custom_post_type', 
            'field' => 'slug',
            'terms' => array(ICL_LANGUAGE_CODE == 'ar' ? 'tool-ar' : 'tool'),
        ),
    ),
);
$loop = new WP_Query($args); 
 
while ( $loop->have_posts() ) : $loop->the_post();

Make sure you have the correct values in the post_type and taxonomy fields. The value of post_type should be the custom post type you are querying and the taxonomy should be the correct taxonomy associated with your posts.