when trying to start ,maybe 3 attempts no fire then after a 30 minute wait it will probably start?

 

Have you put a code reader on the OBD11 port to see what the car is reporting is the problem?

Off the top of my head you could have any number of problems, but here are two that spring to mind......

1) Crank position sensor faulty: if the crank position sensor is not working, the car needs to crank over for an extended period of time to eventually work out where the engine firing order is. It will start but might take 3 or 4 times longer than usual to deduce the spark timing needed to catch the engine.

2) Fuel pressure: If you have little to no fuel pressure then obviously there is nothing for the injectors to deliver. You might have a faulty fuel pump that is worn out.

Testing option one is easy, crank for longer to see if the car starts reliably with a longer crank time.....if so likely the crank position sensor is dead, or bad connector, or wiring to it.

Testing for option 2 is not so easy, you would probably want to get a decent code reader that can also check some of the engine parameters to see if fuel pressure is being reported and what it is.
You can use a cheap ELM327 OBD11 reader that is wireless and something like the Torque App (Android) on your phone to check codes and also see some of the engine readings.

Don't go down the rabbit hole of replacing parts until you have interrogated the codes and worked out which are relevant and what they are trying to tell you.
You will just burn cash at an extraordinary rate throwing unnecessary parts at the perceived problem and nobody wants to do that.
You can post your codes on this thread as an update and members will help you with some insights on what you may need to look for or do.

Good luck.