[seelmobile]

I had a similar experience as you but ended up reducing my requirements and getting a dumb phone (Jethro SC490) with no direct internet access and the ability to set up a hotspot.

If I need anything besides SMS/MMS and voice calls I turn on a hotspot and take out my laptop. I'm "offline" by default but still reachable in emergencies.

I do cheat on the camera portion by using my partner's smartphone for pictures where I care about the quality.

You lose conveniences but the tradeoff was very worth it in my case. I have no plans of going back to a smartphone.