i need to implement 2 google codes: leads + phone tracking

Hello,
i need to implement 2 google codes, and i dont know how / where... because what i did dont work
1. Event Code Google for leads on forms, entire site.
2. Event Calls Google phone, entire site.
the site:
https://www.frontbranding.com

this is for the leads:

<!-- Event snippet for ליד באתר conversion page -->
<script>
gtag('event', 'conversion', {'send_to': 'AW-10939205655/UXj1CK3Xj8oDEJeQnOAo'});
</script>

this is for the calls:

<!-- Event snippet for שיחות מהאתר conversion page
In your html page, add the snippet and call gtag_report_conversion when someone clicks on the chosen link or button. -->
<script>
function gtag_report_conversion(url) {
var callback = function () {
if (typeof(url) != 'undefined') {
window.location = url;
}
};
gtag('event', 'conversion', {
'send_to': 'AW-10939205655/TSLdCPnWkMoDEJeQnOAo',
'event_callback': callback
});
return false;
}
</script>

i thought it's easy, just paste this codes on the hooks, and in entire site...
but it's not working.
please help.
thanks