Jim is right. Security is complicated.
If we upload a lot of photos to Google, then we risk someone getting the photos, but not the personal data we keep on our laptop. But if someone jacks our Synology, then we risk all the data on the Synology and even our laptop and desktop computers.
Companies with highly skilled professional staffs get hacked all the time, so we can get hacked at home. At the least, we should understand how to configure out systems to minimize risk and maximize protection.