Smart Meters monitor you, do this yourself for more privacy.
Delete your Wi-Fi networks that you no longer need.
Your phone is like a tracking device, permanently on you...
Turn off Bluetooth to save being tracked by your unique Bluetooth ID.
Resist the temptation to create lot of accounts, they can be very hard to delete.
Try and avoid cameras in your own home controlled by others companies. Learn how to set a system up yourself, that you control.