How to make different titles on the post card and on the post page?

Question

Design

I wholeheartedly welcome everyone. There was a problem with the site design: adding keywords to the title. It's easy to add them to the standard header, but they spoil the card of the post itself. Is it possible to make different headings in the card and on the post page? How to apply this code only for headers on single pages?

add_filter( 'the_title', 'suppress_if_blurb', 10, 2 );
function suppress_if_blurb( $title, $id = null ) {
return '';
return $title;
}

Answer 1

add_filter( 'the_title', 'add_text_to_page_title' );
function add_text_to_page_title( $title ) {

  if ( in_the_loop() && is_single() ) {
    $title = 'Смотреть: '. $title;
  }

  return $title;
}