Good for having such ambitions. But you are likely more than aware that the majority of metal bands don't make any money, let alone making a living. And that isn't only in your country, that goes for States, Canada and Europe too. If a very good and well known band can be break even I believe they are doing remarkably well.
But that shouldn't let you down and the best way is to start spreading your music, make your music available on Bandcamp, Youtube and so and send your demo's to metal records and magazines that supports your style of metal. Not even sure what you play.
I am not in any band or what but I am following the metal scene for some 35 years so I have picked up some info here and there.