For better or worse, I use a Chinese phone so the only Google things I have are side-loaded. 
Chinese phones are really interesting. Not sponsored by the CCP ζεΎεζ¬’ε°ζ·ζ·
If you're using the same accounts on the VPN, that makes it pointless. In addition, VPN services are not all rosey - they track you too. You have to know some good ones, or have a self-hosting friend.
About Ungoogled Chromium, maybe you should take a look at the PDF in this post. That omnibox in stock Chrome is 
Mitigating some is better than mitigating none. Anywho, it looks like this topic will branch into three separate topics. Nice.