How to use pagination in a search form in Laravel - php

Question

I am trying to create a searching system with pagination in Laravel that displays the results refined by multiple options from an inquiry list.
The refined search works fine, but when I click the pagination link, the all options are reset.
First, I was trying to store sessions but it didn't work somehow.
After I posted this question, I changed my code as below.
Currently, I'm trying to use "attends" but still it doesn't work.
The options are reset when I click the pagination link.
** Codes below are edited after posted this question. **
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Models\Contact;
class ContactController extends Controller
{
public function index()
{
$contacts = Contact::paginate(10);
return view('admin/index', ['contacts' => $contacts]);
}
public function search(Request $request)
{
$query = Contact::query();
$fullname = $request->input('fullname');
$gender = $request->input('gender');
$email = $request->input('email');
$created_at_start = $request->input('created_at_start');
$created_at_end = $request->input('created_at_end');
if ($fullname != '') {
$query->where('fullname', 'like', '%'.$fullname.'%');
}
/* Other IF options */
else {
$contacts = Contact::paginate(10);
}
$contacts = $query->paginate(10);
return view('admin/index', compact('contacts'));
}
}
use Illuminate\Support\Facades\Route;
use App\Http\Controllers\ContactController;
Route::get('/', function () {
return view('index');
});
Route::get('admin', [ContactController::class, 'index']);
Route::get('admin.search', [ContactController::class, 'search'])->name('admin.search');
SearchForm:
<form class="search-box__items" action="admin" method="GET">
#csrf
<label class="search-box__items__label">
Name
<input name="fullname" type="text" class="search-box__item" value="{{ $fullname ?? '' }}">
</label>
<!-- Other options -->
<input type="submit" value="Search">
</form>
<div class="contacts">
<div class="pagination">
{{ $contacts->appends(['fullname'=>$fullname ?? ''])->links() }}
</div>
<div class="contacts-table">
<!-- Inquiry list -->
</div>
</div>