https://calyxos.org/ and https://grapheneos.org/ both go part of the way. They're hardened, privacy-preserving Android flavors that work best on Google Pixel 3 - 5. CalyxOS emulates google services so you can use basically any Android app, while GrapheneOS goes further down the security hardening hole.

Huh didn't know about these, thank you! I'll look into them

I actually want a good flip phone myself.

I bought a locally made KaiOS phone but it has too low RAM and keep crashing.

Nokia makes flip phones with KaiOS but they aren't allowed in my country sadly.

Reason is I want a phone I can repair myself, all my previous phones I had to replace because some unrepairable part that didn't need to be unrepairable (one of them it was the battery!) broke down.

Instead of shelling a ton of money to be tracked and buy a product that won't last, I wish I could spend my phone on something that will last.

And the flip cover is convenient for me because I keep forgetting to lock my phone and managed to pocket dial even with an android.

I don't do online banking on my primary bank - only on the secondary NatWest one I keep < £100 in.

Its reducing the attack surface as I see it.