overleaf subfigures
% Side-by-side subfigures
usepackage{subcaption}
begin{figure}[h]
begin{subfigure}{0.5textwidth}
includegraphics[width=0.9linewidth]{image1}
caption{Caption1}
label{fig:sub1}
end{subfigure}
begin{subfigure}{0.5textwidth}
includegraphics[width=0.9linewidth]{image2}
caption{Caption2}
label{fig:sub2}
end{subfigure}
caption{Subfigures}
label{fig:Figure1}
end{figure}