I want a phone that doesn't track the living hell out of me, and has an OS which I can modify and reinstall myself, and most importantly, doesn't immediately st

I want a phone that doesn't track the living hell out of me, and has an OS which I can modify and reinstall myself, and most importantly, doesn't immediately stop receiving security updates after 1 year. It doesn't have to be Linux, but that seems like the best candidate. I'm very happy to be proven wrong here.