I know commercial VPNs are just switching who sees your data,

Oh yeah.

And yes, I distrust Google to no end.

Me too, the reason why I use ungoogled-chromium is mostly because of that and because when you take Chrome and remove all the tracking and spyware it runs way faster ahah. There are many people and projects that came together in the ungoogled-chromium community and the source code is scrutinized and cleaned up like nothing else.