Tag page that displays specific posts

Create tag.php & save it in your theme directory. This is a default behavior of wordpress. So you don’t have to struggle with it.

<?php 
    if ( have_posts() ) :

        // Start the Loop.
        while ( have_posts() ) : the_post();
            // Do your stuff here such as below
            the_title();
            the_content();

        endwhile;
    else:
        echo 'No Post Found';
    endif;
?>