Drush commands not working

Update, I also followed the directions on this module, video_embed_field_migrate → with similar results:

$ composer require drupal/video_embed_field_migrate
Using version 1.0.x-dev for drupal/video_embed_field_migrate
$ drush cache-clear drush
'drush' cache was cleared.                                           [success]
$ drush vef_migrate field_video_media
The drush command 'vef_migrate field_video_media' could not be found.[error]
 Run `drush cache-clear drush` to clear the commandfile cache if you
have installed new extensions.

Works fine for me, might be the Drush version, I was using
Drush version : 12.5.3.0