Tracking your website helps you understand important elements about your website and your visitors.
Adding a Facebook Pixel to your site is the first step to tracking your site. Pixels can be added to all websites, no matter the platform you are using to build it.
The Facebook Pixel can give valuable traffic data and also be used for advertising.
Google Analytics + Search Console
My favorite website tracking duo is Google Analytics and the Google Search Console. Google Analytics gives you very detailed information on traffic and behavior on the site, whether its a blog or an eCommerce shop. The search console is very helpful in giving you information on how traffic found your website and what keywords they used to find it.