> You’re just carrying a blank phone that you intend to set up and use later, and they can’t force you to install your backup onto a phone.
They can just make this illegal too, and ask for the keys to your backup, or detain you until you do. Point is, you can't gain freedom through technology. It was always a political thing.
You can hide a backup very well. Make a Proton account for drive over Tor and memorize the credentials.
You can gain freedom though technology but if someone wants to torture you or a regime wants to put you in prison they can always do that.
You could also gain freedom by being anonymous preventing getting caught, though technology.