Automation and IoT in my house:
Front door - keypad entry. No phone connectivity, you must physically enter the code. Multiple 4 digit codes available. Automatic lock after 30 seconds. Alarm if you band it too hard.
Upstairs hallway light 2x - Battery powered motion detection, intensity of a "bright nightlight".
Garage lighting - Hard wired motion activated shop light (LED)
Laundry room lighting - Hard wired motion activated shop light (LED)
Attic - Hard wired motion activated shop light (LED)
Entertainment -
Logitech Harmony Hub. Speaks to and controls the TV, 7.2 Sony receiver, FiOS set top box. Controlled by the included remote and app on a tablet or phone
4x outdoor PoE security cameras - Hardwired, speak to their own DVR and attached 15 year old monitor. Only ethernet enabled if I physically plug in the Cat5e, like if I were to go on vacation, and open the port through the router firewall.
My Alexa/EchoDot/Ring is 100% secure. It lives on the warehouse shelf at the mothership, unpurchased.
What automation are you looking for? The "S" in IoT stands for Security.