Footnote-DW Stil anpassen

\documentclass[a4paper,12]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\begin{filecontents}{\jobname.bib}
@Collection{Richter2021a,
  address      = {Stuttgart},
  editor       = {Richter, Cornelia and Armbruster, Ann-Kathrin},
  gender       = {pf},
  keywords     = {Lebenskrise / Bewältigung / Resilienz / Spiritualität / Medizin / Katholische Theologie, secondary},
  shorteditor  = {Richter/Armbruster},
  year         = {2021},
  booksubtitle = {Die Kraft von Religion und Spiritualität in Lebenskrisen},
  booktitle    = {An den Grenzen des Messbaren},
  publisher    = {W. Kohlhammer},
  series       = {Religion und Gesundheit},
  shortauthor  = {Richter/Armbruster},
  volume       = {3},
}
@Collection{Bauer2021,
  address      = {Stuttgart},
  editor       = {Bauer, Christian and Bieler, Andrea and Gärtner, Judith and Michelle Becka and Heike Springhart and Hille Haker and Katharina Klöcker and Hildegund Keul and Katharina Ganz and Michaela Quast-Neulinger and Katharina Leniger and Pierre-Carl Damian Link and Hildegund Keul},
  gender       = {pp},
  shorteditor  = {Bauer/Bieler/Gärtner},
  year         = {2021},
  mainsubtitle = {Gesellschaftsrelevant und interdisziplinär},
  maintitle    = {Theologische Vulnerabilitätsforschung},
  publisher    = {W. Kohlhammer},
}
\end{filecontents}

\usepackage[%
  doi=true,%
  annotation=false,%
  hyperref=true,%
  backend=biber,%
  namefont=smallcaps,%
  style=footnote-dw,%
  idemfont=italic,%
  pageref=true,%
  idembib=true,%
  ibidtracker=constrict,%
  xref=false,%
  idembibformat=dash,%
  edbyidem=true,%
  journalnumber=afteryear,%
  useeditor=true,%
  useprefix=true,%
  editorstring=parens,%
  edstringincitations=true,%
  citepages=permit,%
  urldate=long,%
  xref=true%
]{biblatex}

\addbibresource{\jobname.bib}

\DefineBibliographyStrings{german}{%
  bibliography = {Literaturverzeichnis},
  shorthands    = {Abkürzungsverzeichnis},
  urlseen       = {zuletzt abgerufen am},
  url           = {in},
}

\DeclareFieldFormat{url}{\addcomma\space in\addcolon\space\url{#1}}
\DeclareFieldFormat{urldate}{\hspace{-0.3em},\space\bibstring{urlseen}\space#1}

\renewcommand*{\bibmultinamedelim}{\addslash}% Bibliographie
\renewcommand*{\bibfinalnamedelim}{\addslash}% Bibliographie
\renewcommand*{\citemultinamedelim}{\addslash}% Zitate
\renewcommand*{\citefinalnamedelim}{\addslash}% Zitate

% Ihre Original-Namensformate
\DeclareNameFormat{default}{% Vollzitate 
  \usebibmacro{name:family-given}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}%
  \usebibmacro{name:andothers}}

\DeclareNameFormat{labelname}{% alle anderen Zitate
  \usebibmacro{name:family-given}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}%
  \usebibmacro{name:andothers}}

\DeclareNameFormat{sortname}{% Bibliographie
  \iffirstinits
    {\usebibmacro{name:family-given}{\namepartfamily}{\namepartgiveni}{\namepartprefix}{\namepartsuffix}}
    {\usebibmacro{name:family-given}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}}%
  \usebibmacro{name:andothers}}

\renewcommand*{\jourvolstring}{\addcomma\space Jg\adddot\space}
\renewcommand*{\journumstring}{\addspace}
\renewcommand*{\sernumstring}{\addcomma\space\bibstring{volume}\addspace}

% Sourcemap für Note und Location
\DeclareSourcemap{
  \maps[datatype=bibtex]{
    \map{
       \step[fieldset=note, null]
       \step[fieldset=location, null]
    }
  }
}

\AtEveryBibitem{\clearlist{language}}
\AtEveryCitekey{\clearlist{language}}

\DeclareCiteCommand{\citebooktitle}
  {\usebibmacro{prenote}}
  {\ifnameundef{editor}
     {}
     {\printnames{editor} automatisch
      \setunit{\addspace}%
      \usebibmacro{editorstrg}%
      \setunit{\addcolon\space}}%
   \iffieldundef{maintitle}
     {\printfield{booktitle}}
     {\printfield{maintitle}}%
   \setunit{\addperiod\space}% 
   \iffieldundef{mainsubtitle}
     {\printfield{booksubtitle}}
     {\printfield{mainsubtitle}}%
   \iffieldundef{series}
     {}
     {\setunit{\addspace}%
      \printtext[parens]{
        \printfield{series}%
        \iffieldundef{volume}
          {}
          {\setunit{\addcomma\space\bibstring{volume}\addspace}%
           \printfield{volume}}%
      }}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

\begin{document}
Text\cite[][]{Richter2021a}. \cite[][]{Bauer2021}

\printbibliography

\end{document}