Help me install Google Ads conversion events in my Angular 7 web application -- 4

I have 3 conversion event triggers (sign up, begin checkout, and purchase) from Google Ads that I want to implement into my Angular 7 single-page app website (https://quizmenot.com). The code snippets provided by Google Ads are javascript <script> tags that must be triggered in typescript. All components already exist, they just need the event code added. I attempted implementing the events but they do not fire. I don’t want to use Google Tag Manager at all. Please help me install these javascript triggers in Angular.

My attempt at firing the 'sign up' conversion event in typescript: https://pastebin.com/4bAmnpnP