\documentclass[a4paper,12pt,oneside]{scrartcl}
\usepackage[a4paper, margin=2cm]{geometry}

\input{Packages.tex}

\def \TITLE{Example Title}
\def \SUBTITLE{Example Subtitle}
\def \AUTHOR{Example Author}
\def \DATE{Example Date}

\input{Glossary.tex}

\begin{document}
    
    \input{TitlePage.tex}

    \newpage

    \input{Preface.tex}

    \newpage

    \input{Content.tex}

    \newpage

    \input{Addendum.tex}

\end{document}