GrapheneOS doesn't come with Google Play Services or the Play Store installed. It's designed for maximum privacy and security by de-googling your phone by default. You can still use most apps via alternative stores like Aurora Store or F-Droid, or by sideloading.

It's still built on Google's Android prohect and runs on Google hardware. Start learning Linux. The nice thing about Linux phones is they can run Linux desktop apps, which was a lifesaver for me when I used one as a daily driver. For example, by using Evolution and Nextcloud Desktop I was able to sync contacts, calendar and tasks between my Linux phone and Linux laptop.