Welcome to the forum, Economist.
I hope you will find this forum useful, though I am afraid I can't help you much with this. I am afraid I just don't understand what you are trying to say here:
In your belief, which character that can consider the most character of advocating of peace for this year?
Do you mean something like, "Which international figure do you consider has been the most outstanding advocate for peace this year?"
Student or Learner