If you launched your website then there are three things you must do:
1] Submit your site to [Google Search Console], so it could be indexed and becomes visible in Google Search Engine

2] Connect your site to [Google Analytics], so you can see all the details about your visitors

3] Use [Google Tag Manager] to setup events, so you can track in analytics how visitors interact with your website

links:
1) https://search.google.com/search-console/about
2) https://developers.google.com/analytics
3) https://tagmanager.google.com/#/home

You can read the unrolled version of this thread here: https://typefully.com/coding_hashira/f7OgKWb