How can I rise to power and rule people with an iron fist?

You can't, that's not your nature. :)

I'm not sure but I think you have to become a billionaire first

Oh, I'm sure you'll find that answer here on SW.

you need a huge army and lots of weapons and a death ray from space

The one who really can rule find their way on their own. You can not ask the common people in here.
Might be something is wrong with you or something is wrong with the people here in respect to this question.

It is more like sitting in a bar and asking for pizza, bro.

I know the way😈

In a comic book.

Do you really want to rule on other people?

You been on Netflix?

One word "DRUGS" lol