I'm going to ask for my loaned money back
Why would you ask for your loaned money back?
He did not take responsibility so i want him to experience the consequences.
You are right to ask for your money back, assuming it's past the agreed to due date. It would be best for him to experience some consequences or he may take advantage of you and others again.
I'm gonna make it worse.
You are actually helping him out here because you are refusing to enable him. Him not paying you back is unacceptable, and sometimes the punishment is the only thing that prevents people from doing it again.