The devil is coming to America

Description

Also known as "My Merit and Sainthood in America"
A magic cultivator traveled through time and entered the team that was walking along the line.
Bad news, the cultivation base is gone.
Good news, he is about to arrive at a magical holy land.
However, after arriving, he fell into deep self-doubt as he began to live as a demon cultivator.
Why?
I lead people to evil, but I don’t increase my demonic energy and merit?
I kill people and set fires, but I can’t get enough of my anger?
What part of the problem is this?