The people that mirror your content would have replaced you. Try searching for a few page titles in quotes, you will easily find the culprits then. The problem

The people that mirror your content would have replaced you. Try searching for a few page titles in quotes, you will easily find the culprits then. The problem is that now they will now have "older" content than you, so search engines may think you are copying content and penalise accordingly. EDIT: Heres a random example from a title taken from your blog archive: https://laptrinhx.com/using-bootstrap-tooltips-to-display-jquery-validation-error-messages-471001186/ https://laptrinhx.com/using-bootstrap-tooltips-to-display-jq... Heres another from some recent content: https://blog.logrocket.com/docusaurus-using-fontaine-reduce-cumulative-layout-shift/ https://blog.logrocket.com/docusaurus-using-fontaine-reduce-... Both mark themselves as canonical (the original source of the content) in the head.