Selected multiple items and saved with json encode aren't displayed as selected in edit, bootstrap selectpicker plugin

Im having an issue with making items selected in a multiple select box with selectpicker javascript plugin appear as selected in the edit page. I am saving the picks as json and have no issue with saving them, but when Im editing the entry all the picks aren't selected and the field is blank.

I tried the following in my edit blade:

  <div class="mb-3 col-md-6">
                    <label for="">Quotation Description:</label>
                    <script>
                        $(function () {
                            $('select').selectpicker();
                        });
                    </script>
                    <select   class="selectpicker form-control" name="joinery_name[]" multiple  required>
                        @php
                        $joinery_name = json_decode($quot_edit->joinery_name)
                        @endphp

                        @foreach($joinery as $joineries)
                             <option value="{{ $joineries->name }}" {{ $quot_edit->joindery_name == $joineries->name ? 'selected':''  }} name="joinery_name[]">{{ $joineries->name }}</option>
                        @endforeach
                    </select>
                </div>

My quot model is

protected $table = 'client_quotation';

    protected $primaryKey = 'quotId';

      protected $fillable = [
            'name',
            'email',
            'phone_number',
            'contact_person',
            'date_of_sending_inquiry',
            'joinery_name',
            'verification_date',
            'notes',
            'verified_receipt',
            'created_by',
            'holding_id'
      ];

      public function followup()
      {
        return $this->hasMany(QuotationFollowup::class, 'client_quotation_id');
      }

my joinery model is

    protected $table = 'joinery';

    protected $fillable = [
          'name',
          'created_by'
    ];
}

What can I change in my edit blade to make the selected values decoded from json appear as selected in the multiple select with selectpicker plugin?