Why can't I wish death to people?
Why do you want to wish death to people?
It's my will, anybody who does good things and ask for nothing in return should die.
Rather than having toxic thoughts about someone, you should instead communicate your troubles with someone so that your thoughts don't manifest into something worse. Try not to live with so much hate for someone and move on with your life.
I can't do that.
Then you'll be stuck wishing for something that will never happen. You should learn your limits and want to help others, not wish harm upon them. Start seeing the world through other people's eyes.