We're starting to see a new genre of advice columns, featuring instructions on how to use some piece of modern technology safely, given of course that it's impossible to really use it safely, since the users' understanding of how it works and what they want to accomplish with it is flatly incompatible with its design and with the business model of its maker and licensor.
The journalists who write in this genre are people who know better than to try to use the technology, but use it anyway because their jobs require it and because they know that their readers are going to use it as well, even those who also know better than to try.
“The Motherboard Guide to Using Facebook Safely”
Lorenzo Franceschi-Bicchierai, Motherboard, March 21, 2018
You can't really stop all collection. In fact, even if you leave Facebook (or have never been part of the social network), the company is still gathering data on you and building a shadow profile in case you ever join. …
Facebook's entire existence is predicated on tracking and collecting information about you. If that concept makes you feel creeped out, then perhaps you should quit it. But if you are willing to trade that off for using a free service to connect with friends, there's still some steps you can take to limit your exposure.