Get a Nokia. Clean Android experience and my Nokia 8 had a headphone jack. I'm on Android 8.1, 9 should arrive later this month so it's not too far behind. Only £260.
https://www.amazon.co.uk/Nokia-SIM-Free-Smartphone-Tempered-...
https://www.amazon.co.uk/Nokia-SIM-Free-Smartphone-Tempered-...
Unfortunately headphone jack is still the dealbreaker for me.