Thing is if they want your car they’ll get it, you might put some kids off with a steering lock but the pros go around with cranes.
I had friends some time back who had bollards etc put in their drive thieves came along middle of the night and lifted the car straight onto a transporter they were gone with it in seconds apparently.
I don’t worry luckily because of where we live (0 crime) and down a private road plus I have gates on the drive but even then if it got nicked i’d be annoyed but it’s not my car so not losing sleep over it.