I have a document with a lot of references. I am writing in german and when I use cite or parencite and the paper contains many authors, I get u.a. instead of et al.
These are the packages and settings listed in the main.tex file
%----------------------------------------------------------------------------------------
% PACKAGES AND OTHER DOCUMENT CONFIGURATIONS
%----------------------------------------------------------------------------------------
\PassOptionsToPackage{english, german}{babel}
\documentclass[
11pt, % The default document font size, options: 10pt, 11pt, 12pt
oneside, % Two side (alternating margins) for binding by default, uncomment to switch to one side
ngerman, % ngerman for German
singlespacing, % Single line spacing, alternatives: onehalfspacing or doublespacing
%draft, % Uncomment to enable draft mode (no pictures, no links, overfull hboxes indicated)
%nolistspacing, % If the document is onehalfspacing or doublespacing, uncomment this to set spacing in lists to single
%liststotoc, % Uncomment to add the list of figures/tables/etc to the table of contents
%toctotoc, % Uncomment to add the main table of contents to the table of contents
parskip, % Uncomment to add space between paragraphs
%nohyperref, % Uncomment to not load the hyperref package
headsepline, % Uncomment to get a line under the header
%chapterinoneline, % Uncomment to place the chapter title next to the number on one line
%consistentlayout, % Uncomment to change the layout of the declaration, abstract and acknowledgements pages to match the default layout
]{MastersDoctoralThesis} % The class file specifying the document structure
\usepackage[utf8]{inputenc} % Required for inputting international characters
\usepackage[T1]{fontenc} % Output font encoding for international characters
\usepackage{adjustbox}
\usepackage{cases}
\usepackage[english, german]{babel}
\usepackage{float}
\usepackage{mathpazo} % Use the Palatino font by default
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{array, booktabs, makecell}
\usepackage{listings}
\usepackage[backend=bibtex,style=authoryear,natbib=true]{biblatex} % Use the bibtex backend with the authoryear citation style (which resembles APA)
\addbibresource{example.bib} % The filename of the bibliography
\usepackage[autostyle=true]{csquotes} % Required to generate language-dependent quotes in the bibliography
I would like to use et al. instead of u.a. . So far, I have not been able to find a suitable solution. I would appreciate any hint.

\documentclassand should contain a\begin{document}...\end{document}body with enough dummy contents - probably just a\cite, so that the problem is visible). – moewe May 30 '23 at 15:11\PassOptionsToPackage{english, german}{babel}, then you passngermanto the class, but finallybabelis called with\usepackage[english, german]{babel}. In a simple German document thengermanto the class is enough as the class already loadsbabel(at least in the versions I found). Remove the other two lines. If you have an English and German document, probably best to go withenglish, ngerman,for the class and still remove the other two lines. – moewe May 30 '23 at 15:12MastersDoctoralThesisis a pretty complex and at times messy template (that has gone through many versions of varying degree of messiness). If at all possible I would try to avoid it and go for one of the more establishes classes like the standard classes,memoiror the KOMA-Script classes. – moewe May 30 '23 at 15:15