Marlene, try adding the following JS code in your main.js file inside barba.init function:

    views: [{
        namespace: 'home-section',
        beforeEnter({ next }) {

        // load your script
        let script = document.createElement('script');
        script.src = 'draggable.js'; // location of your draggable js file that is responsible for that image loading and dragging functionality
        next.container.appendChild(script);
        }, 
    }],

Marlene, you need to put this JS code below in a separate JS file and name it draggable.js for example and then insert a path to that JS file only into a script.src parameter that is stated in that code example above inside barba.init function.

var winWidth = window.innerWidth,
    winHeight = window.innerHeight,
    threeWinHeight = winHeight*3;

$(window).on('resize', function(){
  winHeight = window.innerHeight,
  twiceWinHeight = winHeight*2;
});


$('.shape').each(function(){
  var topPos = Math.floor(Math.random()*1300),

      //BE CAREFUL 7000px is less then total body height or  CAUSING OVERFLOW
      leftPos = Math.floor(Math.random() * winWidth);
  $(this).css('top', topPos + 'px');
  $(this).css('left', leftPos + 'px');
});

Draggable.create('.shape', {
  //type:"rotation",
  bounds: '.section-2',
  edgeResistance:0.65,
  throwProps:true,
});


var number = Math.floor((Math.random() *15) + 2);
var number2 = Math.floor((Math.random() * 0) + -15);
var number3 = Math.floor((Math.random() * 0) + 15);
var number4 = Math.floor((Math.random() * 0) + 6);
$(".shape--circle").css("transform", "rotate(" + number2 + "deg)");
$(".shape--square").css("transform", "rotate(" + number3 + "deg)");
$(".shape--circle-2").css("transform", "rotate(" + number4 + "deg)");

Everything is working fine on my index.html. On the first .onload page all the images are draggable and all over the page

HERE THE PROBLEM:

However, when I WENT TO THE PAGE ABOUT.html AND GO BACK TO THE INDEX.html my script look like isn’t working anymore and I can see only one image that is not even draggable anymore.

Have a closer look to my project here:
https://codepen.io/cat999/project/editor/AEeEdg

** HOW DO I FIX ISSUE? COULD SOMEBODY HELP ME TO FIX MY CODE? **

var winWidth = window.innerWidth,
    winHeight = window.innerHeight,
    threeWinHeight = winHeight*3;

$(window).on('resize', function(){
  winHeight = window.innerHeight,
  twiceWinHeight = winHeight*2;
});


$('.shape').each(function(){
  var topPos = Math.floor(Math.random()*1300),

      //BE CAREFUL 7000px is less then total body height or  CAUSING OVERFLOW
      leftPos = Math.floor(Math.random() * winWidth);
  $(this).css('top', topPos + 'px');
  $(this).css('left', leftPos + 'px');
});




Draggable.create('.shape', {
  //type:"rotation",
  bounds: '.section-2',
  edgeResistance:0.65,
  throwProps:true,
});



var number = Math.floor((Math.random() *15) + 2);
var number2 = Math.floor((Math.random() * 0) + -15);
var number3 = Math.floor((Math.random() * 0) + 15);
var number4 = Math.floor((Math.random() * 0) + 6);
$(".shape--circle").css("transform", "rotate(" + number2 + "deg)");
$(".shape--square").css("transform", "rotate(" + number3 + "deg)");
$(".shape--circle-2").css("transform", "rotate(" + number4 + "deg)");

Additionally, the index and the about section has using barba.js.
Here the list of my script:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.4/TweenMax.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.4/utils/Draggable.min.js"></script>
<script type="text/javascript" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/ThrowPropsPlugin.min.js"></script>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script src="https://unpkg.com/@barba/core"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.2.4/gsap.min.js"></script>
<script src="main.js"></script>