Logged User gets recorded in Database when instead I intend to record a financial donor in laravel and laragon

I am working on a website and i needed to record the contributions of members of that organisation in the database. And usually the logged in user can be different from the donor. However, each time I add a new contribution, it records the logged user id in the DB instead of the donor’s id. I have used dd($request->donor_user_id) in the controller to see the id being sent to the controller and it matches that of the donor. However, when I save it to the DB, I see the logged in use id instead.

Everything looks fine for me,yet it does not work. Please what could be causing this issue? See codes below.

The migration/table

public function up(): void
{
    Schema::create('church_parishioner_support_incomes', function (Blueprint $table) {
        $table->id();
        $table->integer('cause_id');
        $table->integer('donor_id');
        $table->integer('is_org_member')->default(0);
        $table->integer('organisation_id')->default(1);
        $table->integer('committee_id')->nullable();
        $table->integer('subactivity_id')->nullable();
        $table->float('amount');
        $table->float('paid');
        $table->float('balance');
        $table->string('comment')->nullable();
        $table->integer('created_by');
        $table->timestamps();
    });

The controller

public function store(Request $request, String $slug){
    $request->validate([
        'cause_id'=>['required', 'integer'],
        'donor_user_id'=>['required', 'integer'],
        'amount'=>['required', 'numeric'],
        'organisation_id'=>['required', 'integer'],
        'paid'=>['required', 'numeric'],
        'balance'=>['required', 'numeric'],
        'comment'=>['nullable'],
    ]);
    //  dd($request->donor_user_id);
    $user=User::findOrFail($request->user);
 
    $income = new ChurchParishionerSupportIncome();
    $income->donor_id=$request->donor_user_id;
    $income->cause_id=$request->cause_id;
    $income->is_org_member=1;
    $income->amount=$request->amount;
    $income->paid=$request->paid;
    $income->balance=$request->balance;
    $income->comment=$request->comment;
    $income->organisation_id=$request->organisation_id;
    $income->created_by=$user;
    $income->save();
   
    toastr('Income saved successfully', 'success');
    return redirect()->route('org.finance.orgmembers-supports.income',['slug'=>$slug, 'user'=>$user]);
}

The route

Route::post('/portal/dashboard/organisation/{slug}/finances/members/members-support-incomes/store', [OrgMembersSupportIncomeController::class, 'store'])->name('org-finance.members-supports.income.store');

The View

<section class="section"> 
<div class="mb-3">
  <a href="{{ route('org.finance.orgmembers-supports.income', [$organisation->slug, 'user'=>$user->id]) }}" class="btn bg-primary custom-txt-bcolor"><i class="fa fa-arrow-left"></i>  
    Go Back</a>
</div>

<div class="row">
  <h5>{{ $income?"Edit Members Support Income Record":"Add Members Support Incomes" }}</h5>
    <div class="col-12 col-md-12 col-lg-12">
      <div class="card card-primary">
        <div class="card-body">
              @if($income !==null)
              <form action="{{ route('org-finance.members-supports.income.update', [$organisation->slug, $income->id, 'user'=>$user->id] ) }}" method="POST" >
              @method('PUT')
              @else
            <form action="{{ route('org-finance.members-supports.income.store', [$organisation->slug, 'user'=>$user->id]) }}" method="POST" >
              @endif
              @csrf

              <div class="form-group">
                <label>Project/Cause</label>
                <select class="form-control select2" name="cause_id">
                  <option value="">Select project/cause</option>
                  @foreach ($causes as $cause )
                    <option {{ $income?$income->cause_id==$cause->id?"selected":"":"" }} value="{{ $cause->id }}">{{ $cause->name }}</option>    
                  @endforeach
                </select>
            </div>

            <div class="form-group">
              <label>Member</label>
              <select class="form-control select2" name="donor_user_id">
                <option value="">Select member</option>
                @foreach ($registeredMembers as $member )
                  <option {{ $income?$income->user_id==$member->user_id?"selected":"":"" }} value="{{ $member->user_id }}">{{ $member->user->first_name }} {{ $member->user->middle_name?$member->user->middle_name:"" }} {{ $member->user->last_name }}</option>    
                @endforeach
              </select>
          </div>
          
              <div class="form-group">
                <label>Amount donated (N)</label>
                <input name="amount" type="number" class="form-control donated_amt" value="{{ $income?$income->amount:"" }}">
              </div>
              <div class="form-group">
                  <label>Paid (N)</label>
                  <input name="paid" type="number" class="form-control paid_amt" value="{{ $income?$income->paid:"" }}">
              </div>
              <div class="form-group">
                  <label>Balance (N)</label>
                  <input name="balance" type="number" class="form-control balance_amt" value="{{ $income?$income->balance:"" }}" readonly>
                </div>
                <div class="form-group">
                  <label>Comment</label>
                  
                  <div class="form-floating">
                    <textarea name="comment" class="form-control" placeholder="Leave a comment here" id="floatingTextarea2" style="height: 100px">{!! $income?$income->comment:"" !!}</textarea>
                  </div>
                </div>
                <input name="organisation_id" type="hidden" class="form-control" value="{{$organisation->id}}" readonly>
              
              <button type="submit" class="btn btn-primary btn_submit">{{ $income?"Update":"Save" }}</button>
            </form>
          </div>
        </div>
      </div>
    </div>
  </div>