It has always seemed likely to me that Google tracks more information than one might immediately suspect, so I try not to do anything which might make it conven

It has always seemed likely to me that Google tracks more information than one might immediately suspect, so I try not to do anything which might make it convenient for them. With reference to location, I leave GPS turned off essentially all the time, and I never enter any Google account credentials into an Android phone. I don't know how much it helps, but it can't hurt.