Laravel error 419 page expired

Hello again Mr.Jo this issue is because you are missing a input of the CSRF token all you need to do is adding the CSRF with one of these ways 
First way

 <form method="POST" action="{{url('insert')}}">
 	<!-- CSRF is below this line -->
 @csrf
 <div class="form-group">
 <input type="text" name="name" placeholder="please Enter your name" class="form-control">
 </div>
 <input type="submit" value="send">
 </form>

Second way

 <form method="POST" action="{{url('insert')}}">
 <div class="form-group">
 <!-- CSRF is below this line -->
 <input type="hidden" name="_token" value="{{ csrf_token() }}" />
 <input type="text" name="name" placeholder="please Enter your name" class="form-control">
 </div>
 <input type="submit" value="send">
 </form>

Hope you be able to understand the idea of CSRF 
You can read about it in the Laravel protection //laravel.com/docs/8.x/csrf

Best regards