Hi @Leda_Atomika
Thanks to @tuanphan @sandrakeus @theresa.southern Please share your website address.
Use this code for your website.
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<script>
$(document).ready(function() {
$(".Header-search .Header-search-form-input").attr('placeholder','new text');
});
</script>
Please use the like button if it helps you!
Best,
Leopold