I would recommend GrapheneOS. There are literally no Google dependencies at all. They have reimplemented privacy friendly alternatives for all built in functionalities typically depending on google such as for location.

Additionally, with their custom built compatibility layer, they allow you to install google play services as a regular app, and fully control which permissions you grant it, which can be useful for apps which depend on google to give you notifications.

Grapheneos is also at the bleeding edge of speed to deliver security updates several times a week.

And with user profiles you can fully separate apps yet they have a custom way of piping notifications between profiles as profiles is a particularly convenient way to isolate apps and prevent them from knowing what other apps are installed.

It's not perfect but it's definitely the most secure and most privacy respecting, it's user friendly, puts the user back in control and works really well the moment you have adjusted to the new way of using android and make use of all the features.

Edit: big caveat, it is only supported on Pixel devices, which may seem illogical for an OS getting as far away from google as possible, but it's for their good security hardware, driver support and allowance for installing an alternative OS.

AOSP-derived ROMs like LineageOS, Copperhead, GrapheneOS and Calyx are specifically developed as alternative android distributions that do not rely on Google to function

I'm running graphene for over a year now and its great

/e/OS

Android is not developed by Google. It's open source but Google adds a lot of stuff on top. There are ways to minimise what apps can spy on you: gboard, keep notes, calendar, calculator, gmail - all can be swapped for better and more privacy respecting apps from F-droid. You can also disable Google and other system (vendor) apps through adb. Some OSs if you don't want to do that are Lineage OS and Calyx OS.

AOSP from my knowledge uses some google addresses like DNS and Time server and connectivity check google servers but unless you will install GMS (Play Services), no private data will be sent to google by default.

i have been using grapheneos for a while now, and honestly its been great. the only problem is limited hardware support (only pixel ≥5 unless officially supported - due to unlockable bootloader). i have gone cold turkey from google apps like maps, although it is possible to set it up to work. banking apps and stuff dont work obviously, but those apps should be avoided anyways. ive also heard (some) good things about lineage, calyx, and /e/. i wish linux phones were daily drivable, but sadly it is not yet practicle for most. i would personally recommend at least looking into graphene on a pixel.

thanks everyone for the replies, unfortunately most of the OSes you guys have provided aren't compatible with my current phone (redMi 11 pro), so if I ever get a google pixel, I will use graphene OS. Good night everyone.

Android does not innately send data to Google, just a lot of phone manafacturers ship with Google apps reinstalled, such as google play and other telemetry. If you install the default Android open source project without anything else, and use F-Droid or Aurora to get your apps, you don't need Google at all.

Android is based on the linux kernel and can be stripped of proprietary software. Custom versions like graphene os exist that are great for privacy.

you can install tracker control or netGuard to see or block those connections

but it must be better to start with graphene, lineage or iodé as your base