imessage-exporter can be used to export messages from your iPhone, if you are switching to a more private phone. Switching to Android, wouldn’t be more private. Android based could be, but Linux or no phone would be the best. Also, they can track your location from cell towers.
Looks like it works, will need to make a newer backup when I get my new phone.
Also, your location, can be found from WiFi too, you can do it yourself with some Raspberry Pis, think you need three, in different locations. Using random MAC addresses, may help. But they’ll have somebody’s location. They may or may not know who it is.
Wired is always better.