One thing I wish I knew going in, apps installed via Aurora store (google play store front end), for example ProtonMail typically rely on google play services to correctly send push notifications unfortunately.

You can remedy this with a seperate profile that can run in the background with google play services and apps that you want notifications for if you take issue with running google software running on your main profile.

Other than that, I've actually found GrapheneOS on my pixel 8 to be a much better software experience than my previous S22 without any tampering at all, both privacy (obviously) and functionally.

Congrats and enjoy your new freedome phone, you won't ever look back!