My Car Engine Won’t Turn

Check the battery. Make sure the terminals are clean and tight. If the battery is dead, jump-start the car or replace the battery.
Test the starter. Turn the key to the “start” position. If you hear a clicking sound, the starter is probably working. If you don’t hear anything, the starter may be bad.
Check the ignition switch. Turn the key to the “on” position. If the dashboard lights come on, the ignition switch is probably working. If the lights don’t come on, the ignition switch may be faulty.
Inspect the flywheel. If the flywheel is damaged, it may prevent the engine from starting. You will need to remove the transmission to inspect the flywheel.
Check the engine for seizure. If the engine is seized, it will not be able to turn. You will need to free the engine by removing the spark plugs and pouring oil into the cylinders.

If you are not comfortable troubleshooting the problem yourself, take the car to a mechanic.
Keep a record of any maintenance or repairs that have been done to the car. This will help you identify potential causes of the problem.
Be patient and methodical when troubleshooting the problem. It may take some time to find the source of the issue.