Starter Replacement?

I would start by disconnecting the battery negative cable. Then raise the car up so you can get at the starter motor. Here is a video to help show you how to raise the car up safely.

https://www.youtube.com/watch?v=xLFn_bMkZc0&pp=0gcJCSgLAYcqIYzv

Next, remove the main power cables and the trigger wire from the starter solenoid. Here is a guide to help you step by step and I have included a diagram for your car in the images below.

https://www.2carpros.com/articles/how-to-replace-a-starter-motor/

Labor time is 1.2 hours to do the job. Check out the images (below). Let me know how it goes

I did a bench test on the starter during the test the bendix will engage and slowly disengage what cause it to disengage?

That is normal, it is difficult to bench test the starter because you cannot load it down like an engine would, if there is a question, I would just replace it.

the starter does the same thing on the car the bendix engage and then disengage i have to crank the car 3 or 4 time before the car start up how do i fix this problem?

When the starter is out can you use a flashlight and check the teeth of the flex plate? Check out this guide:

https://www.2carpros.com/articles/how-flexplates-work/

Let me know how it goes