Interesting. I'd never used an android before, and recently got a Pixel 7a on which I am running lineageos. Haven't found any rough edges other than that the home screen sometimes hangs fixed by turning the screen off and on again which takes less than 5s. What rough edges did you encounter?
GrapheneOS did not meet my needs for sovereign control of my own device, and iOS is worse in this regard, so I gave up cell phones entirely 2 years ago. Turns out they are not as necessary as we convince ourselves they are.
Android has so many rough edges, and the Pixel hardware is still a few years behind the iPhone. I switched back.
I miss syncthing and being able to install the apps that I want, but my phone is too important a device for rough edges.