The “onclick” attribute does what it sounds like: it’s activated when a user clicks it. However, Googlebot will follow the href reference, while users experience the onclick.
If a page has been translated into a different language, it will need an hreflang attribute that points to itself. For pages missing this self-reference, it can be added. Here’s how.
Using the wrong regions in the hreflang attribute results in not getting picked up by Google. It’s important to have invalid/incorrect regions updated to avoid this.
The language code must precede the country code to have a valid hreflang attribute. If your order is invalid, you can update the hreflang to swap the order and resolve this issue.