Don't ever give a "device" network access. Unfortunately with stuff like amazon sidewalk -- even that's not sufficient, products can contain covert listening/watching devices and then share the information over a network you don't control.

A countermeasure to this is to maintain a radio quiet household, but it's only doable if you're out in the middle of nowhere and requires some substantial confessions as MANY devices have 2.4ghz radios in them.