"If not on front page" won't work (wordpress)

I have this small snippet to check if

• I am on the homepage (static page set as homepage) or
• on a page which has a featured image

But it always shows me "no breadcrumb".

<?php if ( !has_post_thumbnail( $post->ID ) OR !is_front_page() OR !is_home() ) : ?>
    <p>no breadcrumb</p>
<?php endif; ?>

I think there is a trivial error and i am just too blind to see it?