Recently I have been looking a little bit into the security topic in Firebase databases and I know about the security rules. My question is, even having implemented that rules, does Google itself have access to the data stored in my database? Can Google legally use and publish these data? In other words, is Firebase database suitable for storing sensitive information, or should I search for other platforms?

Recently I have been looking a little bit into the security topic in Firebase databases and I know about the security rules. My question is, even having implemented the rules, does Google itself have access to the data stored in my database? Can Google legally use and publish this data? In other words, is Firebase database suitable for storing sensitive information, or should I search for other platforms?