Capitalize Headings in TOC and capitalize headings (using KOMA) and not loosing references

I am struggling with the links/bookmarks together with capitalizing TOC and capital headings.

First I struggled with making my capitalized TOC, as well as capitalized headings up to subsections (yes I know it does not look nice, but Cooporate Design requires it).

I am using TeXnicCenter with LuaLaTeX. Additional due to the used documentclass koma-script, so I was searching for an alternative to the package ‘tocloft’

EDIT:
Tried to make my question clear:

I managed almost to get what I wanted with using usepackage{tocloft}:

documentclass[
a4paper,
10pt,
oneside,
%chapterprefix,
%appendixprefix,
numbers=noenddot,
toc=chapterentrywithdots,
toc=listof
]{scrbook}

usepackage{lipsum}
%usepackage{blindtext}
usepackage[]{appendix}         % to get the prefix Appendix infront of Appendix chapters



usepackage[
bookmarks,
bookmarksopen=true,
bookmarksnumbered=true,
pdfauthor={ME},
pdftitle={SCRBook},
colorlinks,
%linkcolor=color{blue},
%urlcolor=color{blue},
plainpages=false,
unicode=true
]{hyperref} 


setcounter{secnumdepth}{3}



%BEGIN - TOC consist only of Word "Appendix", and then on 1st page of appendix content of appendix
%https://tex.stackexchange.com/questions/585062/table-of-contents-with-appendix-short-and-a-new-toc-with-detailed-appendix/585195#585195
DeclareNewTOC[%
owner=jobname
]{atoc}

makeatletter
newcommand*{useappendixtoc}{%
    renewcommand*{ext@toc}{atoc}%
    scr@ifundefinedorrelax{hypersetup}{}{%
        hypersetup{bookmarkstype=atoc}%
    }%
}
makeatother

usepackage{xpatch}

xapptocmdappendix{%
    addchap{appendixname}
    listoftoc*{atoc}
    useappendixtoc
}{}{}

%END - TOC consist only of Word Appendix


%%ALTERNATIVE1
% BEGIN Capitalize sections in TOC and LOF.
usepackage{tocloft}
usepackage{etoolbox}
makeatletter
patchcmd{l@chapter}{#1}{uppercase{#1}}{}{}       % Capitalize chapters.
patchcmd{l@section}{#1}{uppercase{#1}}{}{}       % Capitalize sections.
patchcmd{l@subsection}{#1}{uppercase{#1}}{}{}    % Capitalize subsections
makeatother


%-----for headings in capital------
usepackage[explicit]{titlesec} 

deftab#1{parbox[t]{25mm}{#1}hfill}

titleformat{chapter}{largebfseries}{parbox[t]{13mm}{thechapter}}{0mm}{MakeUppercase{#1}}
titleformat{name=chapter,numberless}{largebfseries}{}{0mm}{MakeUppercase{#1}}

titleformat{section}{largebfseries}{parbox[t]{13mm}{thesection}}{0mm}{MakeUppercase{#1}}
titleformat{name=section,numberless}{largebfseries}{}{0mm}{MakeUppercase{#1}}

titleformat{subsection}{normalsizebfseries}{parbox[t]{13mm}{thesubsection}}{0mm}{MakeUppercase{#1}}
titleformat{name=subsection,numberless}{normalsizebfseries}{}{0mm}{#1}

titleformat{subsubsection}{normalsizebfseries}{parbox[t]{13mm}{thesubsubsection}}{0mm}{#1}
titleformat{name=subsubsection,numberless}{normalsizebfseries}{}{0mm}{#1}

titlespacing{chapter}{0pt}{12pt}{6pt}
titlespacing{section}{0pt}{12pt}{6pt}
titlespacing{subsection}{0pt}{6pt}{3pt}
titlespacing{subsubsection}{0pt}{6pt}{3pt}

setlength{headsep}{12pt}
% END Capitalize sections in TOC and LOF.


begin{document}
    begin{titlepage}
    huge{textbf{TITLE}}  
    bigskip
    Here text for titlepage
        
    end{titlepage} 
        
    
    addchap{Executive Summary}
    addsec{Executive subchapter1}
    lipsum[1]
    addsec{Executive subchapter2}
    lipsum[2]
    newpage
        
    renewcommand{contentsname}{Table of Content}  % WARNING: don't move to preamble  doesn't work there
    setcounter{tocdepth}{6}              % how deep is the table of contents listed
    setcounter{secnumdepth}{6}           % how deep are the sections numbered  
    tableofcontents
    listoffigures
    listoftables
    

    chapter{Chapter}
    label{chap}
    lipsum[1-5]
    section{Section1}
    lipsum[1-5]
    
    begin{tabular}{||c|c|c|c|}
        hline
        rule[-1ex]{0pt}{2.5ex} a & b & c & d 
        hline
        rule[-1ex]{0pt}{2.5ex} 1 & 2 & 3 & 4 
        hline
        rule[-1ex]{0pt}{2.5ex} 5 & 6 & 7 & 8 
        hline
        rule[-1ex]{0pt}{2.5ex} 9 & 10 & 11 & 12 
        

    end{tabular}
    

    
    
    
    section{Section2}
    lipsum[1-5]
    subsection{Subsection1}
    lipsum[1-5]
    subsection{Subsection2}
    lipsum[1-5]
    subsubsection{SubSubSection1}
    lipsum[1-5]
    
    chapter{Chapter2}
    lipsum[1-5]
    section{Section}
    lipsum[1-5]
    
    section{Section}
    lipsum[1-5]
    subsection{Subsection}
    lipsum[1-5]
    subsection{Subsection}
    lipsum[1-5]
    subsubsection{SubSubSection}
    lipsum[1-5]
    
    ref{chap}
    
    begin{appendices}
        appendix
        
        chapter{AppChapter1}
        lipsum[1-5]
        section{Section1}
        lipsum[1-5]
        
        section{Section2}
        lipsum[1-5]
        subsection{Subsection1}
        lipsum[1-5]
        subsection{Subsection2}
        lipsum[1-5]
        subsubsection{SubSubSection1}
        lipsum[1-5]
        
        chapter{AppChapter2}
        lipsum[1-5]
        section{Section}
        lipsum[1-5]
        
        section{Section}
        lipsum[1-5]
        subsection{Subsection}
        lipsum[1-5]
        subsection{Subsection}
        lipsum[1-5]
        subsubsection{SubSubSection}
        lipsum[1-5]
    end{appendices}

    
end{document} 

But as I am using KOMA scrbook this is not recommended, so I tried to make it work with DeclareTOCStyleEntry, but then I lost the hyperlink between TOC and the individual headings (sorry this version is not anymore available).
So I tried to the example from 1st answer (exchange the codepart ALTERNATIVE1 with ALTERNATIVE2):

%%ALTERNATIVE2
%%BEGIN - not loosing hyperref for capital headings %https://tex.stackexchange.com/questions/586977/capitalize-headings-in-toc-using-koma-declaretocstyleentry-and-not-loosing-re/586998#586998
%usepackage{xpatch}
xpatchcmd{chapterlineswithprefixformat}
{#3}
{MakeUppercase{#3}}
{}{PatchFailedI}

xpatchcmd{chapterformat}
{chapappifchapterprefix{nobreakspace}}
{MakeUppercase{chapappifchapterprefix{nobreakspace}}}
{}{PatchFailedII}


xpatchcmd{sectionlinesformat}
{#4}
{MakeUppercase{#4}}
{}{PatchFailedIII}

xpatchcmd{addtocentrydefault}
{#3}
{MakeUppercase{#3}}
{}{PatchFailedIV}


pdfstringdefDisableCommands{defMakeUppercase#1{#1}}

%END - not loosing hyperref for capital headings

This works quite well but I still have the following problem:
The chapter are not yet in the correct size nor capitalized and from subsubsections on the heading is not non-capitalized.
Another issue is that the TOC and the listof are not capitalized.

Maybe I just did not got your help right…?!??