Is it possible to somehow get a similar status from the site?

Question

Google Analytics

Hello!
I want to understand if it is possible to do something like this (get similar statistics from the site):
1. Understand where the person came from (advertising source).
2. Based on where the person came from - change the phone number.
3. Understand how many % of people who came from a certain source of advertising filled out an application or made a phone call.
That is, I would like to get a complete tool for tracking advertising traffic. Perhaps, already partially implement something - somewhere ...
Thank you!

Answer 1

The first and third have long been implemented both in Yandex Metrics and in Google Analytics.
The second is done elementarily, because there are utm tags.