How to display a preview of verses in the Reboot Wordpress theme without removing tags, in quatrains?

Question

WordPress

Hello dear WordPress pros!
Who can help with this problem? On the site https://stihi.blacksea-studio.ru it is necessary to display a preview of poems with the preservation of tags, that is, quatrains.
As I was told in the support service, in order for the tags in the publication cards not to be deleted, it is necessary to publish excerpts manually, but this option does not suit me, since there is a lot of work to be done.
I found the Advaced Except plugin for automatically generating excerpts, but apparently it conflicts with the theme, and the excerpts are displayed in solid text (as on the Home page). WordPress works with the standard output, but the verses are displayed clumsily, as in the section https://stihi.blacksea-studio.ru/lyubimomu-muzhchine
How can I make this plugin work with the selected topic on the Main page and how to display previews of poems in headings similar to the Main page, but with quatrains and page pagination?
I would be grateful for the answers!

Answer 1

You can leave only the first paragraph in the passages, but your quatrains will still have to be reduced to the same form (those that go in solid text)

add_filter( 'wp_trim_excerpt', 'first_paragraph_excerpts', 99, 2 );
function first_paragraph_excerpts( $excerpt, $raw_excerpt ) {
  if ( is_admin() )
    return $excerpt;
  
  if ( '' !== $raw_excerpt )
    return $excerpt;
  
  $content = apply_filters( 'the_content', get_the_content() );
  return substr( $content, 0, strpos( $content, '</p>' ) + 4 );
}