Language to Brazilian Portuguese the dashboard

I would like to change the l

My PHP is already with time.zome America / Sao_Paulo. My config.php file is ‘default_language’ => ‘pt_BR’,
‘default_locale’ => ‘pt_BR’,
What could you do to change?

Unfortunately I don’t understand brazilian portuguese nor do I understand what your problem is. Can you please explain IN DETAIL what you want to change?!