Remove “Category:”, “Tag:”, “Author:” from the_archive_title

You can extend the get_the_archive_title filter which I’ve mentioned in this answer

add_filter('get_the_archive_title', function ($title) {
    if (is_category()) {
        $title = single_cat_title('', false);
    } elseif (is_tag()) {
        $title = single_tag_title('', false);
    } elseif (is_author()) {
        $title="<span class="vcard">" . get_the_author() . '</span>';
    } elseif (is_tax()) { //for custom post types
        $title = sprintf(__('%1$s'), single_term_title('', false));
    } elseif (is_post_type_archive()) {
        $title = post_type_archive_title('', false);
    }
    return $title;
});