[Tex/LaTex] Option twoside not working

documentclassdouble-sided

I am trying to get the twoside-option for documentclass to work. But I am facing a couple of problems:

  1. There is no empty page after the title page
  2. while the spacing does alternate between left and right, the page numbering does not

I have no clue where the problem might be, if more information is needed let me know

documentclass[openright,twoside,a4paper,12pt,headsepline]{scrartcl}

\usepackage{microtype}

\usepackage{graphicx}

\usepackage{amsmath}
\numberwithin{equation}{subsection}

\usepackage[utf8]{inputenc}
\usepackage{ngerman}
\usepackage[ngerman]{babel}

\usepackage[T1]{fontenc}

\usepackage{lmodern}
\usepackage{fix-cm}

\usepackage{longtable}


\usepackage{geometry}
\geometry{left=3.5cm, right=2cm, top=2.5cm, bottom=2cm}

\usepackage{fancybox}

\usepackage[hyphens,obeyspaces,spaces]{url}

\usepackage{color}

\usepackage{amssymb}

\usepackage{pdflscape}

\usepackage{fancyvrb}

\input{latex_einstellungen/variablen}

\usepackage[bookmarksnumbered,pdftitle={\titleDocument},hyperfootnotes=false]{hyperref} 

\usepackage{fancyhdr} %Paket laden
\pagestyle{fancy} %eigener Seitenstil
\fancyhf{} %alle Kopf- und Fußzeilenfelder bereinigen
\fancyhead[L]{\nouppercase{\leftmark}} %Kopfzeile links
\fancyhead[C]{} %zentrierte Kopfzeile
\fancyhead[R]{\thepage} %Kopfzeile rechts
\renewcommand{\headrulewidth}{0.4pt} %obere Trennlinie

\usepackage{array}

\frenchspacing

\usepackage{setspace}

\usepackage{capt-of}

\usepackage{makeidx}

\usepackage{listings}
\lstset{numbers=left, numberstyle=\tiny, numbersep=5pt, keywordstyle=\color{black}\bfseries, stringstyle=\ttfamily,showstringspaces=false,basicstyle=\footnotesize,captionpos=b}
\lstset{language=java}

\usepackage{hyperref}

\begin{document}
    \input{latex_einstellungen/trennung}

    \include{titlepage}

    \onehalfspacing

    \include{abstract}

    \singlespacing

    \newpage
    \tableofcontents

    \newpage
    \fancyhead[L]{\nouppercase{\leftmark}} %Kopfzeile links

    \onehalfspacing

    \input{1_einleitung}

    \input{2_grundlagen}

    \input{3_entwicklung_strategie}

    \input{4_training}

    \input{5_evaluierung}

    \input{6_fazit_ausblick}

    \onecolumn
    \singlespacing
    \newpage
    \addcontentsline{toc}{section}{Literaturverzeichnis}
    \renewcommand\refname{Literaturverzeichnis}
    \bibliographystyle{alphadin}
    \bibliography{bibliography}

    \onehalfspacing
    \newpage
    \addcontentsline{toc}{section}{Anhang}
    \fancyhead[L]{Anhang} %Kopfzeile links
    \input{anhang/anhang}

    \addcontentsline{toc}{section}{Eidesstattliche Erklärung}
    \include{erklaerung}

    \newpage
    \thispagestyle{empty
    \section*{ }

\end{document}

Best Answer

\fancyhead[R]{\thepage} %Kopfzeile rechts 

is putting the page number at the right hand side of all pages.

you can use LO to specify left on odd pages, RO, RE etc.

Note also that the koma-script classes have their own facilities for page headings and (I think) fancyhdr is not recommended here, although it should work in most cases.

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