I have no special secrets, I just find working free for Google, Facebook etc as morally repugnant.
I have so far refused to get a smartphone, and live quite well with a sturdy old Nokia, a navigator for travelling and a camera, plus PC to work and correspond with: compartmentalization is important.
My two children (now 17 and 14) have grown up well on the same diet.
However, I realize having a smartphone for certain “official” tasks (e.g. plane tickets, banking, entering certain offices, etc.) is becoming practically obligatory.
I am looking for a smartphone with a poor camera, no gaming, which hopefully doesn’t tell governments what I am doing and will still be usable five years from now, but can easily use “official” apps, where I can apply /e/ degoogled software, and which we can share in the family, keeping it in the drawer most of the time, if possible dual sim (and usable in Europe where I live).
Great if it could also be easy to repair and with changeable battery, but at least privacy is the main thing.