First off, you don’t need to post the same post 5 times.
As far as the problem, it sounds like it is definitely in the starter circuit. Does this car have an alarm system, and is it factory or aftermarket? The things to look for are the relays, starter motor itself, and ignition switch. An alarm system complicates things, because they typically add another relay to prevent the starter from being used if the alarm goes off.
Also does it have a remote starter function, and is it aftermarket or factory? There have been many posts about ad-on remote starters preventing the car from starting.