Well being migrants to Australia we dont have any family here, so that helps. Also a few rules.
Seperate phones for boyfriends/girlfriends/lovers, not the same phone that is used for work and family, so that means no stored numbers, messages, photos etc. Use telegram/whatsapp for messages that are encrypted on the seperate phone. For safety she carries an airtag in her bra lining or handbag.
Also it helps that we have a large house, and if we are expecting someone then they can drive into the garage and not have to get out on the road.
If wife is going out with a boyfriend, she will sit in the back seat so if someone sees her, it is an Uber.