How to update email value in laravel

We know that laravel has an update () method that updates records using the http "put" method. But I do not know how to create an edpoint in which I will be able to modify the email.

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;

class UserController extends Controller
{

    public function index()
    {
        return response()->json([
            'name' => 'Abigail',
            'state' => 'CA'
        ]);
    }


    public function store(Request $request)
    {
        $user = new User();
        $user->name = $request->get("name");
        $user->email = $request->get("email");
        $user->password = $request->get("password");
        $user->save();
        return response()->json($user->toArray(), 200);
    }



    public function show($id)
    {
        //
    }


    public function edit($id)
    {
        //
    }


    public function update(Request $request, $id)
    {
        //
    }


    public function destroy($id)
    {
        //
    }
}

And my route:

<?php

use Illuminate\Http\Request;

Route::middleware('auth:api')->get('/user', function (Request $request) {
    return $request->user();
});

Route::post('v1/users/create', 'UserController@store');

RESTful APIs made by me tests in Postman. Help me somebody

via Chebli Mohamed