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One common component to cause a no start with extended cranking is the fuel pump itself.The pump is common to fail needing replaced when it does fail.If you have not had the fuel pressure tested this should be done.If you need the info on how this is done let me know.This will require a fuel pressure test gauge to do this test.
As for the battery dying after only a couple of attempts you may have a weak battery as well to where the battery may need replaced.I would have the battery tested to see if the battery needs replaced.This test can usually be done at a local parts store free of charge.
But one of the most common causes for a no start issue is usually the pump itself needing replaced.
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If the engine is cranking but isn't starting at all the most common cause is usually the fuel pump itself needing replaced.It fails suddenly like this here.I have had to replace several of these before for this issue here.I would have the pump pressure and the pump power and ground signals tested to make sure this is the cause.
One other component that can possibly fail here is the crank sensor but fuel pump failure is more common.
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