Yes.

1. Install Fdroid; this gives you access to many based open source application; https://f-droid.org/en/.

2. Inatall Aurora Store; this lets you get apps from Google Play anonymously. https://f-droid.org/en/packages/com.aurora.store/

3. Use #GrapheneOS's built-in app store to install their sandboxed Google Play Services to a work profile that is off by default. This gives you an isolated area to install fiat apps, like bank apps. You can flip the work profile on in a single tap, then use apps that require google apis, then flip off. 95% of my usage does not require it so I rarely turn on the work profile.