Add class to carousel builder if not enough cells. Add to carousel builder > advanced > javascript

carousel.js

jQuery(document).ready(function($) {
  
  let minimumCells = 2; /* Change to minimal cells needed for navigation */
  
  let $carousel = $('#%%ELEMENT_ID%%').find($('#%%ELEMENT_ID%%').children().data('carousel'));
  let numberCells = $('#%%ELEMENT_ID%%').find($('#%%ELEMENT_ID%%').children().data('cell')).length;
      
  $carousel.on( 'ready.flickity', function() {
    
    if (minimumCells > numberCells) {
      	$('#%%ELEMENT_ID%%').addClass('hide-carousel-nav');
    }
    
  });
  
 });