1. Give your next button a class of arrow-button with a combo class of next
2. Give your previous button a class of arrow-button with a combo class of prev
3. Add a collection list onto your collection page and give the wrapper a class of my-wrapper
4. Drag a link directly into the collection item and give it a class of my-link
5. Set the link to go to the collection page of each item
6. You can set the wrapper to display none and apply any sorting order to the collection

<script>
let nextLink = $(".my-wrapper .w--current").parent().next().find(".my-link").attr("href");

if ($(".my-wrapper .w--current").parent().next().length == 0) {
  let firstLink = $(".my-link").eq(0).attr("href");
  $(".arrow-button.next").attr("href", firstLink);
} else {
  $(".arrow-button.next").attr("href", nextLink);
}

let prevLink = $(".my-wrapper .w--current").parent().prev().find(".my-link").attr("href");

if ($(".my-wrapper .w--current").parent().prev().length == 0) {
  let lastEq = $(".my-link").length - 1;
  let lastLink = $(".my-link").eq(lastEq).attr("href");
  $(".arrow-button.prev").attr("href", lastLink);
} else {
  $(".arrow-button.prev").attr("href", prevLink);
}
</script>