There are more options, you just have to look. GrapheneOS, LineageOS, CalyxOS, DivestOS, /e/OS... Android is not synonymous with Google. Android is open source. All the OSs I've listed are based off of Android, and are open source. Google has their own version of Android, which is closed source. But it's just another OS based off of AOSP.
And again I ask, and go where? Your choices for mobile OSs are:
Choose Google and there's no way around this issue. Choose Apple and you've locked yourself into an even more closed ecosystem.
Far too late for that, I'm afraid...
There are more options, you just have to look. GrapheneOS, LineageOS, CalyxOS, DivestOS, /e/OS... Android is not synonymous with Google. Android is open source. All the OSs I've listed are based off of Android, and are open source. Google has their own version of Android, which is closed source. But it's just another OS based off of AOSP.
These are all various forks of #1, and thus subject to the same issue.