How do i add breadcrumb

I am using RDFa Breadcrumb (plugin) and call it in single.php like this:

<?php
/**
 * The Template for displaying all single posts.
 *
 * @since Leaf 1.0
 */

get_header(); ?>

	<div id="primary" class="site-content <?php echo leaf_grid_width( 'content' ); ?> columns">
		<div id="content" role="main">
		<center><?php if(function_exists('rdfa_breadcrumb')){ rdfa_breadcrumb(); } ?></center>
			<?php leaf_post_before(); // Before post hook. ?>

right before the ‘before post hook’

thanks haltas for your concern,after i have install and activated the plugin,you mention call it in single.php like this:and you wrote your codes
please i dont no codes!but tell me the extact line to look for and the code to paste there can you explain what i will do when i get to the editor area. i beg .
gethotinfo.com is my test site.
i saw that wpbeginner.com has semblemce to leaf theme and they using breadcrumb there,i real like to apply it

haltas thanks it works.i used BreadcrumbNavxt in my case .it works thanks dear