WP_Query to get post on frontpage

If you’re trying to get a post with the id of 32, the parameter you would use is p, which is one of the Post & Page Parameters. tag_id is used for querying posts with a particular Tag ID.

$args = array( 
        'post_type' => 'post',
        'p'         => 32
);

$fp_post = new WP_Query( $args );

if ( $fp_post->have_posts() ) :
    while ( $fp_post->have_posts() ) : $fp_post->the_post();
        the_content();
    endwhile;
else:
        echo 'it is not working';
endif;