A noble ideal, but that should be the case regardless of where you’re going ;)
Then the same rules apply, Use different identities that have no connection to each other at all (none of the same information, email, usernames, phone numbers etc) on my phone I like to have “real” stuff separated into a different profile. If you are worried about a search then you can log out of all your real or fake stuff, depending on what you want to be seen. (I’m assuming the fake stuff should be hidden seeing as they will have your passport). You may even want to clear data for those applications or uninstall them.