How to update many to many relationship Model

i want to update roles on my admin panel. But I don't discover the way.

role_Pivot Table

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateRoleUserTable extends Migration
{
    public function up()
    {
        Schema::create('role_user', function (Blueprint $table) {
            $table->foreignId('role_id')->references('id')->on('roles')->cascadeOnDelete();
            $table->foreignId('user_id')->references('id')->on('users')->cascadeOnDelete();
        });
    }

    public function down()
    {
        Schema::dropIfExists('role_user');
    }
}

Controller

public function update(Request $request, User $user) {
        $user->update([
            'status' => $request->status
            'role' => 
        ]);

        return redirect()->route('admin.team')->with('success','Team status Updated Successfully');
    }