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LocationCallback'i Callback değişkenine alarak çözüm sağladım daha önce de aynı şekilde denemiştim fakat Notification kısmını kaldırdıktan sonra problem olmadı ve sağlıklı şekilde çalışıyor.

public class TrackerService extends Service {
    User user;
    MainActivity main;
    private static final String TAG = TrackerService.class.getSimpleName();
    LocationRequest request;
    PendingIntent broadcastIntent;
    LocationCallback first;
    FusedLocationProviderClient client;
    float lastlng;
    float lastltd;
    float mesafe;
    @Override
    public IBinder onBind(Intent intent) {return null;}

    @Override
    public void onCreate() {
        super.onCreate();
        loginToFirebase();
        user = SharedPrefManager.getInstance(this).getUser();

    }
    @Override
    public void onDestroy(){
        client.removeLocationUpdates(first);
        final String path = getString(R.string.firebase_path) + "/" + user.getId();
        DatabaseReference ref = FirebaseDatabase.getInstance().getReference(path);
        ref.child("status").setValue(0);
    }

    public static float distFrom(float lat1, float lng1, float lat2, float lng2) {
        double earthRadius = 6371000; //meters
        double dLat = Math.toRadians(lat2-lat1);
        double dLng = Math.toRadians(lng2-lng1);
        double a = Math.sin(dLat/2) * Math.sin(dLat/2) +
                Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) *
                        Math.sin(dLng/2) * Math.sin(dLng/2);
        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
        float dist = (float) (earthRadius * c);

        return dist;
    }





    private void loginToFirebase() {
        // Authenticate with Firebase, and request location updates
        String email = getString(R.string.firebase_email);
        String password = getString(R.string.firebase_password);
        FirebaseAuth.getInstance().signInWithEmailAndPassword(
                email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>(){
            @Override
            public void onComplete(Task<AuthResult> task) {
                if (task.isSuccessful()) {
                    Log.d(TAG, "firebase auth success");
                    requestLocationUpdates();
                } else {
                    Log.d(TAG, "firebase auth failed");
                }
            }
        });
    }

    private void requestLocationUpdates() {
        request = new LocationRequest();
        request.setInterval(1000);
        request.setFastestInterval(2500);
        request.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        client = LocationServices.getFusedLocationProviderClient(this);
        final String path = getString(R.string.firebase_path) + "/" + user.getId();
        first = new LocationCallback() {
            @Override
            public void onLocationResult(LocationResult locationResult) {
                DatabaseReference ref = FirebaseDatabase.getInstance().getReference(path);

                Location location = locationResult.getLastLocation();
                if (location != null) {
                    Map<String, Object> myList = new HashMap<>();


                    myList.put("UserName", user.getAd()+" "+user.getSoyad());
                    myList.put("accuracy", location.getAccuracy());
                    myList.put("altitude", location.getAltitude());
                    myList.put("bearing", location.getBearing());
                    myList.put("elapsedRealtimeNanos", location.getElapsedRealtimeNanos());
                    myList.put("fromMockProvider", location.isFromMockProvider());
                    myList.put("latitude", location.getLatitude());
                    myList.put("longitude", location.getLongitude());
                    myList.put("provider", location.getProvider());
                    myList.put("speed", location.getSpeed());
                    myList.put("time", location.getTime());
                    myList.put("status", 1);



                    ref.setValue(myList);

                    if((double) lastltd > 0 && (double) lastlng > 0) {
                        mesafe = distFrom(lastltd,lastlng,(float)location.getLatitude(), (float)location.getLongitude());

                        Log.d(TAG,"Mesafa + "+distFrom(lastltd,lastlng,(float)location.getLatitude(), (float)location.getLongitude()));
                        if(mesafe > 10) {
                            SendData(Double.toString(location.getLongitude()), Double.toString(location.getLatitude()), "" + user.getId(), user.getAuth());
                        }
                    }else{
                        SendData(Double.toString(location.getLongitude()), Double.toString(location.getLatitude()), "" + user.getId(), user.getAuth());
                    }







                    lastlng = (float)location.getLongitude();
                    lastltd = (float)location.getLatitude();


                }
            }
        };

        int permission = ContextCompat.checkSelfPermission(this,
                Manifest.permission.ACCESS_FINE_LOCATION);
        if (permission == PackageManager.PERMISSION_GRANTED) {
            // Request location updates and when an update is
            // received, store the location in Firebase
            client.requestLocationUpdates(request,first, null);

        }
    }

    public void SendData(final String longtitude, final String latitude, final String user_id, final String auth){
        RequestQueue queue = Volley.newRequestQueue(this);

        StringRequest stringRequest = new StringRequest(Request.Method.POST, URLs.URL_POST,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject Obj = new JSONObject(response);
                            if(Obj.getInt("error_code") == 1) {
                                SharedPrefManager.getInstance(getApplicationContext()).logout();
                            }
                        } catch (JSONException e) {
                            Log.e(TAG, "unexpected JSON exception", e);
                        }

                        Log.e(TAG, "Gelen yanıt: "+ response.toString());
                        Log.e(TAG, "Gönderilen"+ user_id+" - "+auth);
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.e(TAG,"Çalışmıyor!"+ error);
            }
        })
        {
            @Override
            protected Map<String,String> getParams(){
                SimpleDateFormat fmt = new SimpleDateFormat("MM-dd-yyyy HH:mm");
                Date currentTime = Calendar.getInstance().getTime();
                fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                String dateString = fmt.format(currentTime);
                Map<String,String> params = new HashMap<String, String>();
                params.put("long",longtitude);
                params.put("lati",latitude);
                params.put("date",dateString);
                params.put("id",user_id);
                params.put("auth",auth);
                return params;
            }
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                Map<String,String> params = new HashMap<String, String>();
                params.put("Content-Type","application/x-www-form-urlencoded");
                return params;
            }
        };
        queue.add(stringRequest);
    }
}