Slideshow reel automatic scroll

Site URL: https://greyhound-lynx-5g3p-zingolo.squarespace.com/

Wondering if someone could help me with auto scroll for my slideshow reel at the bottom of my website on my homepage?

I already have a code for a different reel which works for the top of my website on my homepage which is the code below:

<!-- Gallery Reel Section Autoplay -->
<script>
(function() {
  var nextArrowGallery = document.querySelector('.gallery-reel-control-btn[data-test="gallery-reel-control-btn-next"]');
  
  function clickNextGallery() {
    nextArrowGallery.click();
  }
 
  setInterval(clickNextGallery, 25000);
})();
</script>

I would appreciate the help. If there is a better code for my old code too I would prefer it!

If you can help the website password is 1234!4321

can you help please. Sorry to @ you but this is urgent @tuanphan 

Just to clarify, I want the top slideshow reel to change every 2500 and the slideshow reel at the bottom of the page to change every 500