* The key is not inserted correctly. Make sure the key is fully inserted into the ignition switch and that it is turned clockwise.
* The steering wheel is locked. Try turning the steering wheel slightly left and right while turning the key.
* The ignition switch is damaged. If the ignition switch is damaged, it will need to be replaced.
If you are still unable to turn the key, you may need to have your car towed to a mechanic for diagnosis and repair.
Here are some additional tips that may help:
* If the key is difficult to turn, try lubricating the keyhole with a small amount of graphite powder.
* If the steering wheel is locked, you may need to use a steering wheel lock release tool to unlock it.
* If the ignition switch is damaged, you may need to have it replaced by a qualified mechanic.
