My key often gets stuck in the ignition when trying to turn off the car theres a switch or a lever placed by the bottom of the shifter that only allows the key to be removed if the car is in park. This switch has to be back in position to release the key. It could be something as simple as dirt or maybe a spilled juice that made the switch stickey. Ill pull mine apart and make a second video on the lever soon.

I found a way to work with my car to get it out. Try moving the shifter over (not changing gears) slightly then try turning the key. Its not a fix but i believe the gear knob sticks some times and causes the ignition to hold the key thinking the cars not fully shut off. Using this trick might help.