That's why the first thing I do on my new phone is disable the Google app.
It does absolutely nothing useful for me, but never sleeps, eats resources and shows you advertisements.
I also hate the mobile apps that designed to be always on, always listening or nagging.
So, I have the policy: if the app is only useful occasionally and it is active but I didn't start it - I disable it. And I'll enable an app when I need it, not whenever it wants me to use it.
I consider any notification for something I did not explicitly sign up for an ad. So if I get a notification like "use Gemini" or "heres a tip:", that's an ad.
Unfortunately that makes, like, half the default notifications on Android ads. But you can disable all of it.
Android phone, do not disturb enabled...
"learn what new things Android has to offer!". System notification from Android/Google (probably some new Gemini highlight).