Get entries that aren't related to current user
Try this:
{% set entries = craft.entries.section('movementCoursesEntries').level(1).relatedTo({
   targetElement: currentUser,
   field: 'permittedUsers'
}).ids() | join(', not ') %}

{% set unrelated = craft.entries.section('movementCoursesEntries').level(1).id('and, not '~entries).all() %}

{% for entry in unrelated %}
    {{ entry.title }}
{% endfor %}