click to go to specific cell (add to button/link directly, advanced > javascript)

js.js

jQuery(document).ready(function($) {

	 let carouselSelector = '.my-carousel';  /*  Change to your carousel class */
	 let index = 3;                          /*  Change to needed cell index */

	$('#%%ELEMENT_ID%%').on('click', function(e) {
	  e.preventDefault()
	  $(carouselSelector).find($(carouselSelector).children().data('carousel')).flickity( 'select', index, false, true );
	});

});