I have been an Android user for 13 years now. After using almost every Google service possible I am going down the privacy rabbit hole lately. Gmail -> Proton Mail, Chrome -> Firefox, Keep -> Notesnook, Google Search -> Kagi, ...
I am currently using a Galaxy S23 with as few Google apps as possible (and focussing mainly on open-source apps). I am familiar with rooting (I was a CyanogenMod user back in the days), but today I want to use the phone without tinkering and problem solving. I also like to use a smartwatch and banking apps, so GrapheneOS is a no-go unfortunately.
So it is "Stock" Android (or Samsung's Android ) vs. iOS for me. Is it better (in terms of privacy) to use an iPhone or stick with an Android phone with an system wide ad-/tracking Blocker (I use Adguard)? It seems there are more privacy-friendly/open-source apps on Android.
Afaik on Android smartwatches (and the OP said he uses a smartwatch) don't work (properly?) without the Wear OS app. And the Wear OS app doesn't work without Google services. This means the OP can't live without Google services at the moment.
I've read that there's no way around Google services if you use a WearOS watch. Not even MicroG is a solution. Anyway, the OP didn't mention what type of smartwatch he uses. So if it's not a WearOS smartwatch he should be fine I guess. :)