How to create a variable that will record the user's actions on the site?

Question

PHP

Tell me what tools and logic can be used to do this:
The user enters the site and performs certain actions, for example: he stayed on the page for x minutes, clicked on the link, filled out the form, after that his actions are written to a variable and inserted into an email or a specific variable ( denoting the fulfillment of several goals) becomes true and is also inserted into the email that goes to me ?

Answer 1

var superLogVar;

Answer 2

To analyze behavior, you can use https://help.yandex.ru/metrika/webvisor/about-webv...
It will be difficult to determine the behavior yourself, at least you need to know what exactly you need

Answer 3

No, I need to make a variable that will become true if the user, for example, stays on the page for 1 minute and clicks on the link.