After using LineageOS for long time, I have finally moved to GrapheneOS. I use a lot of banking and financial apps which I never felt comfortable using on LineageOS due to lack of proper sandboxing, unlocked bootloader etc.
GrapheneOS works flawlessly just like Android. You don’t even notice there’s hardening underneath. Also it protects from Google’s evil location tracking using WiFi/Bluetooth or even when the Location is turned off. I don’t understand how people in general are comfortable with Google tracking all the time. You can use Google Play and Play Services in a sandbox that works just like regular installation, but without deep tracking.
If you haven’t tried GrapheneOS, try it. You won’t go back to regular Android.
Some banking apps won’t run without SafetyNet (technically now Play Integrity). Pure AOSP doesn’t have it, and AOSP distributions with sandboxed play services or whatever usually fail the hardware attestation requirements. There are some other reasons banking apps won’t work, but a lot of it is similar stuff.