Why is my engine not starting?

Based on your question, I might need a bit more information.

If you can’t turn on your ACC (accessories) which is your lights, gauges, ect., then your battery is probably dead or your alternator is going out (could also be that your battery terminal is corroded or not connected!)

If you can turn on your ACC but the engine won’t crank over, then it might be an engine issue like the spark plugs or coil packs. It could also be that your fuel pump isn’t working, so fuel isn’t getting to the engine. Also, check your fuses! Make sure none are burnt out or missing. Also, make sure your car is in the neutral or park gear select, as it will not allow you to crank over (run the starter) your car otherwise.

A tip, get an OBD2 scanner or go to shop to get your car scanned, as your issue might be shown there. Lemme know if anything I recommended helped!