get recoed between two datetime laravel

$startDate = Carbon::createFromFormat('Y-m-d', '2021-06-01');
$endDate = Carbon::createFromFormat('Y-m-d', '2021-06-30');

$posts = Post::query()
    ->whereDate('created_at', '>=', $startDate)
    ->whereDate('created_at', '<=', $endDate)
    ->get();

$startDate = '2021-06-01';
$endDate = '2021-06-30';

Post::whereBetween(DB::raw('DATE(created_at)'), [$startDate, $endDate])->get();

$startDate = Carbon::createFromFormat('Y-m-d', '2021-06-01');
$endDate = Carbon::createFromFormat('Y-m-d', '2021-06-30');

$posts = Post::whereBetween('created_at', [$startDate, $endDate])->get();

public function scopeCreatedBetweenDates($query, array $dates)
{
    return $query->whereDate('created_at', '>=', $dates[0])
        ->whereDate('created_at', '<=', $dates[1])
}

public function scopeCreatedBetweenDates($query, array $dates)
{
    $start = ($dates[0] instanceof Carbon) ? $dates[0] : Carbon::parse($dates[0]);
    $end   = ($dates[1] instanceof Carbon) ? $dates[1] : Carbon::parse($dates[1]);

    return $query->whereBetween('created_at', [
        $start->startOfDay(),
        $end->endOfDay()
    ]);
}