Can anyone en-light me on below points regarding matrix movies in general

1. Why do machines ever need human being to generate energy where they can produce better and bigger energy from oil or natural gas or nuclear energy much easily. They have the technology, big machines to dig their way to to earth?

2. Why do machines dig their way through earth as they can send sentinels through the pipes/tunnels right away??

3.Why did Neo fail to beat the train man? Is he not the one? How come a program like train man can surpass neo with just one fist? Even Agent Smith is not that strong?

4.How did the machines(especially Ex Due Machina) let Neo to come to close to him since he has the power to terminate any machine easily? Why not any precaution?

5.In the first matrix the featus field seemed almost endless where in revolution we see as featus field only a few buildings?

6.How come a program (agent smith) manage to pass into a human being???

7.What is the real position/designation of oracle in machine world or matrix? Is she the childhood friend of the arcitect?

8.Flying of neo is not much relevant as he used his skill only twice: One to save the keymaker and murpheus from the fatal accident and second to run away from swarm of agents??

9. Also the same subject; in reloaded neo finds himself in the top of the mountains. He finds his way to the highway easily. How does he know his way or direction from himalayas to higway spot? He uses GPRs??

If anyone explains these questions I will appreciate.