"I was a hard working man who became religious"
Just like that? !
"Then I just wanted to do what I thought was right".
So you joined Islamic State a terrorist organisation in Syria ,which is a muslim Empire under a Caliphate, a chief muslim leader. Though you admit this now was "a mistake" and ONLY AFTER this Muslim Caliphate has been beaten. And you got captured by the Kurds? I see. Carry on.
"Australia if my home"....
Hold on, let me stop you there. Australia is not your home. The defeated Islamic Caliphate is your home, where ever that may now be.
"I was born there and my mother is of Australian descent".
And you gave it up along with your passport to go live and fight for your newly adopted State. You belong to the state of Islam, not Australia.
Watch the video in this report it is astounding"