How to override command on my preamble, after its redefinition by my class with renewcommand?

Question

I use this document class abntex2 from: https://ctan.org/pkg/abntex2?lang=en, but when I generate this:

\documentclass[12pt]{abntex2}

\renewcommand{\listfigurename}{Lista de Figuras}

\begin{document}

    \listoffigures*

\end{document}

The list of figures name is not overwritten by Lista de Figuras, it still Lista de Ilustrações:

It only works if I put \renewcommand{\listfigurename}{Lista de Figuras} inside the document like this:

\documentclass[12pt]{abntex2}

\begin{document}

    \renewcommand{\listfigurename}{Lista de Figuras}
    \listoffigures*

\end{document}

Why I cannot override it?

Looking at the abntex2 code, I see they redefine the command:

1. https://github.com/abntex/abntex2/blob/master/tex/latex/abntex2/abntex2.cls#L163

  \renewcommand{\listfigurename}{Lista de ilustra\c{c}\~{o}es}

How to override the \listfigurename on my preamble, after the abntex class inclusion?

---

Extra

If someone is wondering how I switch between English and Portuguese this is how:

\documentclass[12pt]{abntex2}
\usepackage[utf8]{inputenc}
\newif\ifenglish\englishfalse

% \englishtrue
\newcommand{\lang}[2]{\ifenglish#1\else#2\fi}

\ifenglish
    \PassOptionsToPackage{language=english}{biblatex}
    \PassOptionsToPackage{brazil,main=english,spanish,french}{babel}
\else
    \PassOptionsToPackage{language=brazil}{biblatex}
    \PassOptionsToPackage{main=brazil,english,spanish,french}{babel}
\fi

\begin{document}

\section{\lang{English Section}{Seção em Português}}

    \lang{Section contents.}{Conteúdo da seção.}

\end{document}

Which generates the following PDF in Portuguese:

If I uncomment the \englishtrue, then, the generated PDF document will be in English as follows:

Answer 1

The problem with your line

\PassOptionsToPackage{brazil,main=english,spanish,french}{babel}

is that it comes to late. At that moment babel was already loaded without that options you need. You need to move the following line above \documentclass{abntex2}

\PassOptionsToPackage{brazil,english}{babel} % ,spanish,french <========

Please see that I deleted spanish and french not used in the mwe and I deletes main=. We change language later with command

\selectlanguage{english}

To show that the code given below works with biblatex too I added an citing and printing of a small bibliography ...

With the complete MWE:

\PassOptionsToPackage{brazil,english}{babel} % ,spanish,french <========
\documentclass[12pt]{abntex2}

\usepackage[utf8]{inputenc}
\usepackage{csquotes}
\usepackage{graphicx}

\newif\ifenglish\englishfalse

%\englishtrue
\newcommand{\lang}[2]{\ifenglish#1\else#2\fi}

\ifenglish
  \usepackage[language=english]{biblatex}
  \selectlanguage{english} % <==========================================
\else
  \usepackage[language=brazil]{biblatex}
  \selectlanguage{brazil} % <===========================================
\fi
\addbibresource{biblatex-examples.bib}


\begin{document}

\listoffigures*

\section{\lang{English Section}{Seção em Português}}
\begin{figure}[htbp]
  \centering
  \includegraphics[width=5cm]{example-image-a}
  \caption{test}
  \label{fig:example-image-a}
\end{figure}


\lang{Section contents.}{Conteúdo da seção.}

\begin{figure}[htbp]
  \centering
  \includegraphics[width=5cm]{example-image-b}
  \caption{test b}
  \label{fig:example-image-b}
\end{figure}

\cite{knuth:ct,companion}
\printbibliography

\end{document}

gives us the result:

and bibliography

If you want to change the usual used titles/names by babel please have a look to this anwer. It shows how you can for example change the brazil name for \listfigurename:

\addto\captionsbrazil{%
  \renewcommand{\listfigurename}{Lista de ilustra\c{c}\~{o}es}%
}