my imports latex

\documentclass[10pt]{article}
\usepackage{geometry}
\usepackage[utf8]{inputenc}
\geometry{a4paper, textheight = 720pt}
%\usepackage[parfill]{parskip} % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}
\usepackage{subcaption} % This (and the package below) allows for having Fig a), Fig b) as subfigures
\usepackage[labelformat=parens,labelsep=quad,skip=3pt]{caption}
\renewcommand{\thesubfigure}{\thefigure\alph{subfigure})}
\captionsetup[sub]{labelformat=simple}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{siunitx} % e.g. for the \mu
\usepackage{comment} % for multiple lines comments
\usepackage{url} % for referencing URLs (e.g. Zurich Instruments lock-in detection)
\usepackage[hidelinks]{hyperref} % for red borders around references
%\usepackage{rotating} % for rotating image and caption
\usepackage{tikz}
\usepackage{epstopdf}
\usepackage{titlesec}
\newcommand{\sectionbreak}{\clearpage} % Create a page break for each section
\usepackage[hang,flushmargin]{footmisc}
\usepackage[page]{appendix}
\renewcommand{\appendixpagename}{Appendix}
\setcounter{secnumdepth}{4}
\titleformat{\paragraph}
{\normalfont\normalsize\bfseries}{\theparagraph}{1em}{}
\titlespacing*{\paragraph}
{0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
\usepackage[backend=biber,
sorting=none]{biblatex}
\addbibresource{lit.bib}
\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}
\numberwithin{equation}{section}
\usepackage{setspace}