Custom page with one edit form

<?php

namespace App\Filament\Pages;

use App\Services\AppointmentService;
use App\Models\Setting;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Pages\Page;
use Filament\Actions\Action;
use Filament\Forms\Contracts\HasForms;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Support\Exceptions\Halt;
use Filament\Notifications\Notification;
use Illuminate\Database\Eloquent\Model;

class PageSettings extends Page implements HasForms
{
    use InteractsWithForms;

    protected static ?string $navigationIcon = 'heroicon-o-document-text';

    protected static string $view = 'filament.pages.page-settings';

    public ?array $data = [];

    public function mount(): void
    {
        $this->form->fill($this->getSetting());
    }

    public function form(Form $form): Form
    {
        return $form
            ->schema([])
            ->statePath('data');
    }

    protected function getFormActions() { ... }

   //data saving
    public function save(): void
    {
        try {
            $data = $this->form->getState();

            $this->handleRecordUpdate($data);
        } catch (Halt $exception) {
            return;
        }

        Notification::make()
            ->success()
            ->title(__('Successfully data updated'))
            ->send();
    }

  // data query to mount() function
    protected function getSetting(): array
    {
        $setting = Setting::first();

        return $setting->attributesToArray();
    }

// data query from database
    protected function handleRecordUpdate(array $data): Model
    {
        $record = Setting::find(1);

        $record->update($data);

        return $record;
    }
}