\documentclass[10pt]{book}
\usepackage{geometry}
\geometry{
total={130mm,212mm},
  }
%\usepackage[showframe,b5paper]{geometry}
%
%\setcounter{secnumdepth}{-4}
%\setcounter{tocdepth}{0}
\usepackage{mfirstuc}
%
%\usepackage[fontsize=10]{fontsize}
%
%\sepackage[cam]{crop}
%\usepackage[cross,b5,center]{crop}
%\usepackage[showframe,b5paper,verbose]{geometry}
\counterwithin{figure}{section}
%\usepackage{fontspec}
%\usepackage{lmodern}
%\usepackage{ebgaramond}
%\usepackage{ebgaramond-maths}
%\usepackage{times}
\usepackage[export]{adjustbox}
\usepackage{wrapfig}
% \usepackage{fourier}
%\usepackage[T1]{fontenc}

\usepackage[french]{babel}
%\frenchsetup{og=«, fg=»} % inutile avec lualatex

\usepackage{textcomp}
\usepackage{epigraph,csquotes,verse}

\usepackage{graphicx}
\usepackage{layout}

%
\usepackage{titlesec}
\usepackage{chngcntr}
\usepackage{upquote}
\usepackage{microtype}
\usepackage{xcolor}
\usepackage{longtable}
\usepackage{booktabs}
\usepackage{bookmark}
\usepackage{array}
\usepackage{calc}

%\usepackage{footnotehyper}
%\usepackage{footnote}
\usepackage{soul}
\usepackage{multirow}
\usepackage{placeins}

\providecommand{\tightlist}{%
	   \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}

% \renewcommand{\thesection}{}
% \renewcommand{\thesubsection}{\arabic{section}.\arabic{subsection}}
% \makeatletter
% \def\@seccntformat#1{\csname #1ignore\expandafter\endcsname\csname the#1\endcsname\quad}
% \let\sectionignore\@gobbletwo
% \let\latex@numberline\numberline
% \def\numberline#1{\if\relax#1\relax\else\latex@numberline{#1}\fi}
% \makeatother

\newcommand{\mysection}[2]{\section*{ #2}}

\newcommand{\titre}[5]{% date / type /auteur/ membre/ titre
  %\section*[{\bfseries #1.} \capitalisewords{#2} par #3, #4.\\#5]{}%
  %{\raggedright\sl\bfseries #1}%
  {\raggedright{\textsl{\bfseries\large \capitalisewords{#1}}}}\\%
  {\raggedright{\bfseries\large \capitalisewords{{#2}} de #3,} \textsl{#4}}%
   \addcontentsline{toc}{section}{{\bfseries #1.} \capitalisewords{#2} par #3, #4.\\#5}%
  \vspace*{24pt}%
  \begin{center}{\Large\bfseries #5}\end{center}%
  \vspace*{5mm}%
}
% \makeatletter

% \renewcommand\section{\@startsection {section}{1}{\z@}%
%                                    {-3.5ex \@plus -1ex \@minus -.2ex}%
%                                    {-1em}%
%                                    {\normalfont\large\scshape}}

% \makeatother
%\titleformat{\section}[block]{\normalsize\scshape\filcenter}{}{1em}{}
\titleformat{\section}[block]{\large\bfseries}{}{100em}{}
\titleformat{\subsection}{\normalsize\bfseries}{}{}{}
%

%
\begin{document}%\layout
\pagestyle{plain}
\newcounter{none}
% \maketitle


$body$
\tableofcontents
\end{document}