That will be another thread for tomorrow.
It is much more involved and thought provoking.
(And a lot more fun!)
I’m not really a skeptic, I just question everything which I don’t understand.
Answers to your original posted questions can easily be found at these links:
Why did Jesus have to die?
https://www.gotquestions.org/why-Jesus-die.html
Why was Jesus crucified?
https://www.gotquestions.org/why-was-Jesus-crucified.html
Did God sacrifice Himself to Himself to save us from Himself because of a rule He made Himself?
https://www.gotquestions.org/did-God-sacrifice-Himself.html
Why did Jesus have to experience so much suffering?
https://www.gotquestions.org/Jesus-suffering.html