#1. Use code to Code Injection – Footer

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
  $(document).ready(function(){
    $('<img src="https://content.invisioncic.com/p289038/monthly_2024_05/basket.png.8dc2a9ce38537463aa6ac28d35b94b00.png" class="custom-cart-icon"/>').insertBefore('svg.icon--cart');
});
</script>
<style>
  span.Cart-inner svg {
    display: none;
}
span.Cart-inner .custom-cart-icon {
    width: 30px;
}
</style>

#2. Result