Starting problem

If the car was running properly before the starter issue, something is telling me there is now an electrical issue. Are you certain everything has been put back together properly? Will the engine start for a few seconds using starting fluid? If it does, then there is a fuel related problem. If it does not, then it is ignition related. I think that is the first thing that needs to be determined. Once that is figured out, then we can focus on a specific system to find what is causing the problem.
Recheck the area you where you worked, Make sure nothing was disconnected, damaged.

The ignition harness was also replaced because it burnt and the battery is still new. the starter was tested it was fine. i am going to replace all the spark plug cables in the week as they look worn out and brittle. the car was serviced four months before the starter gave problems. just wish for the car to start. do you think i should replace the whole ignition?

If the ignition is working then it should be okay. When the engine does not start does the ignition have spark? Here is a guide to help you find out.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please let us know what happens.

Cheers, Ken

Good day I have checked the car for spark it has good spark somehow just doesnt wana start even checked the fuel no problem

It sounds like low compression. Can you run this test to see what you find?

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what happens.

Cheers, Ken

Must my coil be very hot when i try to start my car?

No it should not be, it sounds like you have a computer that is going out because the coil driver is not terminating the pulse signal which makes the coil hot.