How do I add an update controller for image uploads?

I'm making crud with ckeditor and uploading images, I'm having trouble with the controller update part How do I add an update controller for image uploads? on my controller

this my Controller

Create & Store

   public function create()
{
    return view('mypost.create', [
        'categories' => Category::all()
    ]);
       }


       public function store(Request $request)
{
    
    $request->validate([
        'title' => 'required',
        'slug' => 'required|unique:posts',
        'category_id' => 'required',
        'image' => 'image|file|mimes:jpg,png',
        'body' => 'required',
    ]);

    $input = $request->all();

    if ($request->hasFile('image')) {
        $image = $request->file('image');
        $imageName = date('d-m-Y') . '.' . $image->getClientOriginalName();
        $path = public_path('/uploads/post');
        $image->move($path, $imageName);
        $input['image'] = $imageName;
    }

    $input['user_id'] = auth()->user()->id;
    $input['excerpt'] = Str::limit(strip_tags($request->body));
    $input['body'] = $request->body;

    Post::create($input);

    return redirect('/mypost')->with('success', 'Post success save!!');
       }

Edit

   public function edit(Post $post, $id)
{
    $post = Post::findorfail($id);
    return view('mypost.edit', [
        'post' => $post,
        'categories' => Category::all()
    ])->with('post', $post);
       }

Update

       public function update(Request $request, $id)
{
    $post = Post::find($id);

    $input['title'] = ($request->title);
    $input['slug'] = ($request->slug);
    $input['category_id'] = ($request->category_id);
    $input['user_id'] = auth()->user()->id;
    $input['excerpt'] = Str::limit(strip_tags($request->body));
    $input['body'] = ($request->body);

    $post->update($input);

    return redirect('/mypost')->with('success', 'Post Sucess updated!!');
       }