2. Try jiggling the key. Sometimes, the key can get stuck in the ignition. Try jiggling the key back and forth to see if you can get it to turn.
3. Use a lubricant. If the key is still stuck, you can try using a lubricant to help it turn. Spray some lubricant into the ignition and then try turning the key.
4. Check the battery. If the battery is dead, the car will not be able to start. Check the battery to make sure that it has enough power.
5. Replace the ignition switch. If none of the above steps work, you may need to replace the ignition switch. This is a job that is best left to a professional mechanic.