We had a few good Linux phones back in the day but Nokia / Microsoft killed them trying to compete with iPhone OS and Android: Maemo / Meego were great but did not get a proper chance.

Jolla continued the legacy and Sailfish OS is still something worth checking out if you can find suitable hardware, or idk how complex it is to port it.

Seems to be new Jolla phone coming up at some point too: https://forum.sailfishos.org/t/next-gen-jolla-phone/23882