Trigger click not working

Trigger click not working

Hello everybody,
I want to trigger a click on https://shop.adidas.ae/en/stan-smith-shoes/S82255.html (to make a shoe bot).
Why does this code not work to trigger the size type button?

setTimeout(function () {
   $('select.product-type.js-size-type').trigger('click');
}, 1000);

This is the select button:
<select class="product-type js-size-type">

Thanks in advance!