Car hard starts and stalls

Hello,

When you have issue starting, does it crank and not start?
Or when you turn the key it does nothing, till you try few times it starts?

The issue you have facing could be the symptom for a faulty ignition switch or a failing crank sensor.
Bad crank sensor can impact the starting issue. It can also make the engine stall at random times.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

If the ignition switch if faulty then when you turn the key it will do nothing. Many time you can keep turning the key and eventually it will start. This issue may not happen all the time.

I have attached the crank sensor and ignition switch diagrams for your reference.

Please let me know of any questions.

Thank you.