Can I put an element in the middle of my content?

Hi there,

Hooks only exist in code, they aren’t inside your content.
But it is possible to create a custom hook after X number of paragraphs.
Here is the require PHP to create the Hook:

add_filter( 'the_content', 'db_insert_portable_hook_two', 20 );
function db_insert_portable_hook_two( $content ) {
    if ( is_single() && ! is_admin() ) {
        global $post;
        ob_start();
        do_action('inside_post_content');
        $inserted_hook = ob_get_clean();
        return prefix_insert_after_paragraph( $inserted_hook, 3, $content );
    }
    return $content;
}

function prefix_insert_after_paragraph( $insertion, $paragraph_id, $content ) {
  $closing_p = '</p>';
  $paragraphs = explode( $closing_p, $content );
  foreach ($paragraphs as $index => $paragraph) {
    if ( trim( $paragraph ) ) {
     $paragraphs[$index] .= $closing_p;
    }
    if ( $paragraph_id == $index + 1 ) {
     $paragraphs[$index] .= $insertion;
    }
  }
  return implode( '', $paragraphs );
}

This line: return prefix_insert_after_paragraph( $inserted_hook, 3, $content ); the 3 specifies the paragraph number after to insert it.

Then you can creata a block Element and in the Hook list choose: Custom Hook and paste: inside_post_content in the field ( thats the hook the code provides ).