Privacy on the internet hasn’t been a thing in many years. Tracking is fundamentally built into most of the internet to such a degree that it is possible to build a full profile of your likes, dislikes, political opinions, medical problems, etc…
You can use a privacy centered browser like LibreWolf, a VPN, use Linux without SystemD, avoid Google, self host everything, use a phone with a custom ROM, and many other privacy centered lifestyle changes and even then you’re still only going to marginally reduce the amount of information that is collected. It is beneficial for advertising companies to collect your data, and as long as this remains the case, they will stop at nothing to acquire it.

Doing all of this just makes you stand out more. You want to have privacy? Don’t use the internet, don’t use a smartphone, and pay with cash. Or just don’t do weird stuff on the internet.