This is the rub, tech is able to track you based on your browser, viewport size, os, location (a vpn still has a location if you aren’t rotating) and more. I use Firefox for privacy and just that measure alone rules out 97% of internet traffic and zeros down who I am within 3%. How private am I if I default to that 3%. 1440p monitor and a half screen Firefox viewport? Now we’re building an advertising profile!
If targeted advertising is your main threat, then you are lucky to _currently_ live in a country whose government _currently_ does not consider you an enemy or potential enemy. Many people are not that lucky and many people will become unlucky despite not changing anything about themselves.