Displaying a List of Changes / Updates on the Website Publicly

I was wondering if there was some way to display / track down the recent changes for the pages (and possibly posts).

I mean, showing admin updated x page Jan. 15, 2022 3pm. Something like my old site. This is the current site.

Maybe I'm asking too much but I also would like to reflect what was exactly updated as well.

I must clarify that I don't want this to be only seen internally, I want it to be shown for the public.

I asked somewhere else and a guy replied and he gave me this code:

add_filter('the_content', 'append_revision_info_to_the_content', -1);
function append_revision_info_to_the_content( $content ) {
if( ( is_single() || is_page() )  is_main_query()  in_the_loop() ) {
    $revisions = wp_get_post_revisions(get_the_ID());

    $content .= wp_kses_post(section class='revisions');
        // loop through all revisions for current post/page
    foreach($revisions as $revision) {
            // for each revision...
        // ...let's store revision author
        $revision_author = get_user_by('id', $revision-post_author);
        // ...and add author and revision date/time with some html structure to the post/page content
        $content .= wp_kses_post(div class='revision'Revision by span . $revision_author-user_login . /span edited at span . $revision-post_modified . /span/div);
    }

    $content .= wp_kses_post(/section);

    return $content;
    }
}

Unfortunately, the code didn't work and add that the communication fell off when the guy stopped replying to my messages. I still have no idea why it's not working.

Best regards.