GreatBlue

Could you post the output of ufw status verbose ?

I can see a bot doing it, behaving like the Piped-Bot with an explanation why it's important to remove the tracking.

It's a good bot ;-)

Nothing says "keeping all the malware out" more, than constantly having to remove malware ;-)
https://www.scmagazine.com/analysis/meta-uncovers-400-malicious-apps-on-android-and-ios-apps
https://cointelegraph.com/news/fake-trezor-crypto-app-removed
https://threatpost.com/click-fraud-malware-apple-app-store/149496/

Fennec (Firefox for Android) with uBlock and NoScript

You could also look into OpenWrt and maybe get your device an open firmware. For a more advanced setup you can look into OPNsense, but you will probably need additional devices for WLAN, DECT, etc.

It should be the same. But depending on the organization behind the platform, they might play dumb if you only request the deletion through the profile tools.