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Each Facebook User is Monitored by Thousands of Companies
(themarkup.org)
This is a most excellent place for technology news and articles.
You can find routers and what not with various PiHole like software. If you're comfortable with network engineering then you can certainly write NACLs and the like to blacklist tracking networks.
Stopping them at the browser level is also reasonably effective. EFF's Privacy Badger is a must have extension for me.