@puppytrue :-
Read the website:-
https://www.opera.com/download#opera-gx
It's ported to Windows, Mac, Android and iOS. You're out of luck on this one, 'cos it hasn't yet been built for Linux. And it doesn't look as though it will be any time soon.
If it had, we would have had a 'portable' version by now. I want to try it, too, only I'm going to have to be patient.....and wait. I'm not installing Windows just to try out some fancy browser.
Mike. 
