creation controller filter by stage and by diver

<?php

namespace App\Http\Controllers;

use App\Models\DivingSession;

use Illuminate\View\View;

class DivesByDiverList extends Controller

{

    public function index($diver_name, $diver_firstname): View

    {

        $divesByDiver = DivingSession::select('DS_CODE', 'car_diving_session.DL_ID', 'DS_DATE', 'DL_DEPTH', 'CAR_SCHEDULE', 'DL_NAME')

            ->join('car_diving_location', 'car_diving_session.DL_ID', '=', 'car_diving_location.DL_ID')

            ->join('car_registration', 'car_diving_session.DS_CODE', '=', 'car_registration.DS_CODE')

            ->join('car_user', 'car_diving_session.US_ID', '=', 'car_user.US_ID')

            ->where('US_NAME', $diver_name)

            ->where('US_FIRST_NAME', $diver_firstname)

            ->get();

        return view('divesByDiver', ['divesByDiver' => $divesByDiver]);

    }

}

 No newline at end of file

    {

        $divesByStage = DivingSession::select('DS_CODE', 'car_diving_session.DL_ID', 'DS_DATE', 'DL_DEPTH', 'CAR_SCHEDULE', 'DL_NAME')

            ->join('car_diving_location', 'car_diving_session.DL_ID', '=', 'car_diving_location.DL_ID')

            ->where('DL_NAME', $stage)

            ->where('DL_DEPTH', $stage)

            ->get();

        return view('divesByStage', ['divesByStage' => $divesByStage]);

    }