Don't kid yourself. Locking yourself in a room making armor is not likely going to get you a girlfriend. Don't expect a girl to knock on your door and said you are cool.
First, get a good education to get a good job. No job no future.
Second, get a good job to get some good money. McD won't pay for your college.
Third, get some money to be able to spend on a girl. Don't ask your parents for money for movies, right.
Fourth, get out of your house and meet new people.