Hi Willi,
Thanks for getting in touch with us.
You absolutely should not be linking anything in the current page to itself. Not only is it bad for UX but it is frowned upon by search engines as well.
With that said, you can use Breadcrumbs from Rank Math by going to WordPress Dashboard > Rank Math > General Settings > Breadcrumbs. Simply enable breadcrumbs, change the options as per your preference and save the changes.
Then, grab the code and paste it in your theme’s single.php and page.php files (ideally)
If you are unsure about this step, please talk to your theme provider and ask them where the breadcrumbs code should be placed. Even if you use a free theme, the support should be able to help you with the ideal placement of the breadcrumbs code. For your reference, here is the breadcrumbs code used to insert Rank Math’s breadcrumbs:
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Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.