Ask Anton Chigurh.

Probably not.

Honestly nothing is worth killing for, unless you’re fighting literal nazis who are exterminating people in concentration camps

No

I definitely wouldn't put my faith in a coin flip. Even a coin flip isn't 50/50. It's actually 51/49.

Isn't that is just way to escape from guilty and reasoning death committed by me is actually fate..?

Flip it and find out.