[General Questions and Answers] GalaxyA325G:
Thanks for the pointer to Insular whose advertising on F-Droid says:

Based on that, I suspect this XDA thread about "Island" may be useful.

[APP][5.0+][BETA] Island - app freezing, privacy protection, parallel accounts​

Like you, my relationship with Google is strained where I don't set up any Google Account on Android and it works just fine.

I don't have a contacts.db sqlite database for that reason too, so my favorite communication apps are all designed to store their own contacts db internally to the app itself.

I replace Google apps with FOSS equivalents such as NewPipe (or, more recently, Vanced YouTube) for example.

And I spoof my GPS location by default (using Lexa Fake GPS, for example).

Of course, given I don't have a Google Account on my phone, I use the Aurora Store instead of the Google Play Store. Of course, I strive for apps that don't require Google Framework Services (GSF) which Aurora neatly filters out for us.

Since I'm not rooted, I can't delete Google Play Store, but I can disable it, which is almost as good.

And, I use privacy-aware apps for my messenger, calendar, contacts, and dialer apps (many of which come from Simple Mobile Tools' suite which are available on F-Droid).

To keep my WiFi SSID/BSSID/GPS/Strength/etc. out of the hands of Google (& Mozilla and Kismet and Wigle, etc.), I add "_nomap" to the SSID and I turn off the SOHO router SSID broadcast (which "hinders" most cellphones from uploading my BSSID information to Google public servers); but then I have to also turn off "AutoReconnect" on Android 12 and also I have the Developer Options set in Android 12 to randomize the MAC address on EACH connection; however that means I need to set any "static" connections on my LAN from the phone and not with address reservation on the router (which typically utilizes the MAC address).

And it's not just Google we need to keep our data out of their hands, as I even use WhatsApp privacy aware tools such as the WhatsApp dialer and WhatsApp Click to Chat mechanisms (to keep my contacts out of Facebook's hands too).

For offline maps, I use a quick web browser lookup on a privacy browser (such as Tor or Epic or Opera), since the Google address lookup is still the best in the world... (which is the love/hate relationship, right?)... and then I paste the GPS coordinates that the privacy browser found on the maps.google.com web site into a local routing application (such as a shortcut to a browser to google maps on the phone or better yet, to a dedicated offline map program such as OSM And~), and even traffic can be gotten without Google (e.g., Sigalert & 511 apps).

I used to reset the Advertising ID with a homescreen shortcut that could be activated from Windows via a batch file over Wi-Fi, but now with Android 12 we can wipe out the Advertising ID altogether (i.e., reset it to all zeroes). However, I still periodically change my GSF ID and other supposedly unique identifiers.

I'm still trying to figure out the implication of "trackers", so if anyone has more information about them, please advise.

Off hand there must be scores more things I do for privacy, where we probably should have a main thread on this site of all the myriad things people can do to increase their privacy on Android (some of which I've screenshotted for you below).