Query In Laravel Returns Empty Response

I am tying to retrieve data from my data base using leftJoin in laravel. I have two table name users and appointments in my appointments table there is a field name doctor_id that holds the doctor id related to the id in users. both the id value is same. I need the name of doctors from users table and appointment_date , status from appointments table if the column id value in users table matches column appointments value in appointments table with a where clause where patient_id = $patientID. But when I execute my query it returns empty response.

code

$patientID = $request->patientID;
$prevAppointments = DB::table('appointments')
  ->leftJoin('users', 'appointments.doctor_id', '=', 'users.id')
  ->select(
    'users.first_name',
    'users.last_name',
    'appointments.appointment_date',
    'appointments.status'
  )
  ->where('appointments.patient_id', $patientID)
  ->get();
return($prevAppointments);

user table

appointments table

Try this -

$patientID = $request->patientID;
$prevAppointments = DB::table('appointments')
                        ->leftJoin('users', 'appointments.doctor_id', '=', 'users.id')
                        ->select('users.first_name','users.last_name','appointments.patient_id', 'appointments.appointment_date','appointments.status')
                        ->where('appointments.patient_id',$patientID)
                        ->get();
return($prevAppointments);