I've heard good things about GrapheneOS. LineageOS is another popular degoogled Android image.
Google wasn't getting enough data on users from the search engine so they created a browser to spy on everything you browse and not just what you search for.
They still weren't satisfied with that amount of data, so they provided entire operating systems (ChromeOS and Android).
They have reached an Orwellian level of stalking and surveillance.
The Android project itself is Open Source. Most phone manufacturers bundle Google's spyware with their OEM images but you can put Open Source Android images without Google on many phones. Unfortunately, many app developers still write dependencies on Google services so not all apps are available or work.
This would be a great topic for an upcoming meeting.