404 Not Found, but route exist in Laravel 9

I am trying to hit on name and get the details of lead but every time it shows 404 not found

blade file code

@foreach($lead as $lead)
  <tr>
    <td>
      <a href="{{ url('show_lead', $lead->id) }}">{{ $lead->first_name }} {{ $lead- >last_name }}</a>
    </td>
    <td>{{ $lead->company }}</td>
    <td>{{ $lead->email }}</td>
    <td>{{ $lead->phone }}</td>
    <td>{{ $lead->lead_source }}</td>
    <td>{{ $lead->lead_status }}</td>
    <td>
      <a class="btn btn-success fa fa-edit" href="{{ url('edit_lead', $lead->id) }}"></a>
      <a class="btn btn-danger fas fa-trash-alt" onclick="return confirm('Sure You Want To Delete This Lead')" href="{{ url('/delete_lead', $lead->id) }}"></a>    
    </td>
  </tr>
@endforeach

route:

Route::get('show_lead/{id}', [HomeController::class, 'show_lead']);

controller

public function show_lead()
{
    $lead = lead::find($id);

    return view('admin.leads.show_lead', compact('lead'));
}

You should give a name to your route.

Route::get('show_lead/{id}', [HomeController::class, 'show_lead'])->name('show_lead');

Then, in your blade file, call this route using the route($name, $parameters = []) helper.

<a href="{{ route('show_lead', ['id' => $lead->id]) }}"></a>

And in your controller, you need to add the {id} parameter you've defined to the controller method's arguments.

public function show_lead($id)
{
    $lead = lead::find($id);

    return view('admin.leads.show_lead', compact('lead'));
}

Lastly, in case you've been caching your routes in development for some reason, run php artisan route:clear.

Using route model binding, you could do this with less lines

Route::get('show_lead/{lead}', [HomeController::class, 'show_lead'])->name('show_lead');

<a href="{{ route('show_lead', [$lead]) }}"></a>

public function show_lead(Lead $lead)
{
    return view('admin.leads.show_lead', compact('lead'));
}