Wont start just put in a new battery and a alternator?

Hello,

When you turn the key to start, what happens, does it make any noise?
If you just hear clicking noise, it could be due to a bad starter or corroded or loose wiring for the starter.
First make sure that the cable is secured and free of any corrosion.
If it still just makes the clicking noise, then the issue is likely a bad starter.

https://www.2carpros.com/articles/starter-not-working-repair

Another possibility is a bad starter relay. The starter relay is located on the center console (see diagram).
Check for any corrosion or burn pin(s).
That relay can also be tested.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.