In Yoast documentation it says:
To implement the breadcrumbs function in Yoast SEO, you will have to edit your theme. If you are not sure how to edit the theme files, your theme developer may be able to help. We recommend that prior to any editing of the theme files, a backup is taken. Your host provider can help you take a backup.
Copy the following code into your theme where you want the breadcrumbs to be. If you are not sure, you will need to experiment with placement:
<?php
if ( function_exists('yoast_breadcrumb') ) {
yoast_breadcrumb( '<p id="breadcrumbs">','</p>' );
}
?>
NOTE: Depending on your theme you may or may not need to add in the beginning <php and ending ?> PHP tags. If you are not sure, your theme developer can help.
You can check full article here: https://yoast.com/help/how-to-implement-yoast-seo-breadcrumbs/
Where should I paste this code to use yoast breadcrumb in singel product pages? Thanks.
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