If you want privacy (or anything for that matter), the only way you're going to get it is by user choice. A device that doesn't let you install your own apps is not going to deliver what you want.
You can install your own apps on a Samsung Galaxy.
For privacy, I'd recommend hardware with as few blobs as possible and of course an unlocked bootloader.
You can install your own apps on a Samsung Galaxy.
For privacy, I'd recommend hardware with as few blobs as possible and of course an unlocked bootloader.