belongsToManyRelation not working in laravel 8 - laravel

Question

I have many to many relation which is inserting data correctly but when I try to fetch data it gives me no data.
one table is boss and other is workers
Migration
<?php
public function up()
{
Schema::create('boss_worker', function (Blueprint $table) {
$table->id();
$table->unsignedBigInteger('worker_id');
$table->unsignedBigInteger('boss_id');
$table->timestamps();
});
}
Boss model relation
public function workers()
{
return $this->belongsToMany(\App\Models\Admin\Worker::class,'boss_worker');
}
How I am trying to fetch data
public function index()
{
$boss = Boss::find(1);
dd($boss->workers);
}
How I am inserting data
$input = $request->all();
$workers = $input['workers'];
$input['workers'] = implode(',', $workers);
$boss = Boss::where('staff_id',$request->boss)->first();
$worker_gangs = $boss->workers()->sync($workers);
It is not fetching any data

Answer 1

use
public function index()
{
$boss = Boss::with('workers')->find(1);
}

Answer 2

When you call a relationship from a model you are calling to Illuminate\Database\Eloquent\Builder so, you can access and apply any filter or query with the Query Builder, to fetch the data from that relationship, you have to use these methods to execute the query
->get();
->first();
your code have to be:
$boss = Boss::find(1);
$workers = $boss->workers()->get();
dd($workers);
or you can make eager loading with the Boss model
$boss = Boss::with('workers')->find(1);
dd($boss->workers);