Implement Google Remarketing Tag

I need a Google Ads remarketing tag added to a site that is hosted on GoDaddy and built with their standard website builder. The goal is simple: fire the tag on every page so I can build remarketing audiences in Google Ads and launch display campaigns with confidence.

Here’s what I’m looking for:
• Add the global site tag (gtag.js) and the event snippet where required.
• Verify that the tag is loading correctly using Tag Assistant or a similar checker.
• Provide a brief walkthrough or screenshots so I know exactly where the code sits in case I need to update it later.

I’m already clear on the campaign strategy—I just need the technical tag installation handled quickly and accurately. If you have GoDaddy and Google Ads experience, this should be a short, straightforward task.