disable categories in breadcrumb navigation

Dear Kriesis,
I’m creating a website with lots of posts and different categories. I set up pages and use the Avia Blog Post element to display posts filtered by categories in different ways. This works fine and provides an indivual layout for these pages and individual sidebars.

The Problem is the breadcrumb navigation. As long as I navigate the page links in the main menu everything works fine. But as soon as I visit a single post the breadcrumb navigation switches to categories what is confusing.

Styling the category archives is very limited and showing the archives is not wanted.

Is it possible to hide the breadcrumb category navigation and display the page navigation on single posts with post name at the end of trail, as e.g.:
Home / Auktionen(=page) / Premium Aktionen(=page) / Postname
instead of:
Home / Auktionen cat (=category) / Premiumauktionen cat(=category) / Postname
?
I found some php-snippets in former support topics:

add_filter( ‘avia_breadcrumbs_trail’, ‘remove_category_from_breadcrumb’, 50, 2, );
function remove_category_from_breadcrumb( $trail, $args ) {
if ( is_single() ) {
unset ($trail[1]);
unset ($trail[2]);
}
return $trail;
}

add_filter( ‘avia_breadcrumbs_args’, ‘avia_breadcrumbs_args_mod’, 10, 2 );
function avia_breadcrumbs_args_mod( $args ) {
// print_r($_SERVER);
// [REQUEST_URI] => /category/auktionen-cat/e-auktionen/
// print_r($args);
$urlsWithoutCatShow = array(‘/auktionen-cat/’);
foreach ($urlsWithoutCatShow as $url) {
if (strpos($_SERVER[‘REQUEST_URI’], $url) !== false) {
$args[‘show_categories’] = false;
}
}

$args[‘show_categories’] = false;

return $args;
}

At the moment these sripts are disabled in the functions.php in my Enfold childtheme. By enabling the categories are hide but the breadcrumb trail is too short and useless: Home / Postname

I’m looking forward to any idea.
Best regards
Anne