Yes, Custom ROMs as OOTB may not be enough. But with root privileges, hardening and debloating solutions, it can be better than iPhones and other options. iPhone will be less “Googled” because it is not Google’s product, but Android is a Google product. So it is possible to label Android as completely “Googled”. However, if we talk about privacy concerns, there are Google services within Android that we can categorize as core and malicious. We can remove the harmful ones as needed, but the iPhone remains a privacy nightmare no matter how few Google products it has. I don’t think the only criterion that defines a secure and private phone is how deGoogled it is. My personal decision is to use any free custom ROM with hardening and debloating.
In Türkiye, we have same things too. My solution is to have a phone ONLY for that actions. No any other apps. Happy with it.