latex report format

\documentclass[a4paper, 12pt]{article}

\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{indentfirst}
\usepackage{graphicx}
\usepackage{multicol,lipsum}
\usepackage[bottom=3cm,top=3cm,left=3cm,right=3cm]{geometry}
\usepackage{setspace}

\begin{document}

\begin{titlepage}
\begin{center}

%\begin{figure}[!ht]
%\centering
% \includegraphics[width=4cm]{C:/ifba.jpg}
%\end{figure}

\Large{titlename}\\
\vspace{50pt}
\large{DATE}\\
\vspace{50pt}
\large{Written By,}\\
\vspace{30pt}
\large{author}\\

\end{center}

\vspace{1cm}

\end{titlepage}
\newpage

\newpage

\tableofcontents
\thispagestyle{empty}

\newpage
\pagenumbering{arabic}
% % % % % % % % % % % % % % % % % % % % % % % % % % %
\doublespacing

\section{Introduction}
\newpage
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{%%%%%%}

\subsection{$$$$$$}

\subsection{Conclusion}

\newpage
\bibliographystyle{plain}
\bibliography{bibliography.bib}
\end{document}