how to use component in Laravel 6.x

I would like to make a component.

However It does not work.

I tried to @component('components.pulldown')@endcomponent however , it happnens 500 error.

so I used @exntend instead.

but it only displays upper side of the page.

    @foreach ($users as $user)
    <tr>
        <td></td>
        <td></td>
        @if($user->country)
        <td></td>
        @else
        <td>Select  @extends('components.pulldown') </td>
        @endif
    </tr>
    @endforeach

<select name="countries">
<option value="US">US</option>
<option value="UK">UK</option>
<option value="EU">EU</option>
<option value="JP">Japan</option>
</select>

via Chebli Mohamed