How to avoid subsection appearance in one place on latex?

I am writing a document on latex(overleaf) with the following pattern.

**\Section{1}
\subsection{1.1}
\begin{fig}
\end{fig}
\section{2}
\subsection{2.1}
\begin{fig}
\end{fig}
\subsection{2.2}
\begin{fig}
\end{fig}
\section{3}
\subsection{3.1}
\begin{fig}
\end{fig}**

Instead of following this pattern, all sections and subsections are shown at the beginning of first page followed by all figures.

what can be the possible error?