The link above is very intuitive. One toggle disables search history in all Google products, another one removes location history, etc. You can also click on "Manage activity" for more fine-grained details in some apps.
Did you check that link? It looks fairly intuitive to me. Given that I'm having a hard time parsing your response. However if there's some specific setting in there that's not available, that would make sense.
I think each individual action is fine, but I don't understand how it's easy to manage privacy as a whole. Each aspect of privacy is separate, and can be finely customized in one particular way per session. There's no way to set different arrangements of settings for different times, or even just a button on mobile to whack that indicates "Ignore my data for the next few minutes."
The more specific work I need to go through to set up my privacy, the less inclined I am to do it. If I didn't think I was able to be manipulated psychologically in this way, well, I wouldn't worry about advertising at all! If I were to ever do something politically dissident/personally embarrassing on the internet (not that I ever have of course) I'd go to the trouble of ensuring encryption and being hard to track, but I think it's important that I'm able to say to Google "Hey, I'm cool with you telling me when I should check off work to hit the bar, but it's super weird that you know what I should get my Mom for Mother's Day."
Of course, the simplest way of making a system that's both fine-grained and intuitive might involve... more AI, so I'm not sure how to crack that issue.