It's not me, Google, it's you - from GA to Fathom
tl;dr : I'm now using Fathom for my personal website analytics, and it's easy to self-host and maintain, better for privacy, and can lead to better site performance.
Since the mid-2000s, right after it became available, I started using Google Analytics for almost every website I built (whether it be mine or someone else). It quickly became (and remains) the de-facto standard for website usage analytics and user tracking.

Before that you
Rendering Twig templates programmatically in Drupal 8
From time to time, I have the need to take a Twig template and a set of variables, render the template, replacing all the variables within, and then get the output as a string. For example, if I want to have a really simple email template in a custom module which has a variable for first_name , so I can customize the email before sending it via Drupal or PHP, I could do the following in Drupal 7: