Here are your options.

1. Latest iPhone: Apple has been known to have the best long term software upgrades/support for its phones. They have long last batteries, when they do start to degrade they degrade gracefully and unnoticeably to the end user.

2. Latest Pixel 7: Google has recently committed to providing long software support to its pixel phone line. There is an option to contact customer support directly on the phone. It starts with a pretty good bot but if things get complicated they'll redirect you to a human

3. old Nokia brick: there is a reason why they get called bricks, they last forever. Nothing can break them

Finally if you buy a smart phone get a good screen protector and a otterbox or similar case. Its the case that saves the phone physically.