Accelerometer working

MPU6050 mpu;

int 16_t ax, ay, az, gx, gy, gz;

int vx, vy;

int button1 = 6;

int button2 = 7;

int buttonState1 = 0; 

int buttonState2 = 0; 

void setup()
 {

     Serial.begin(9600);

     Wire.begin();

     pinMode(button1, INPUT);

     pinMode(button2, INPUT);

     mpu.initialize();

     if (!mpu.testConnection())
       {
          while (1);
       }
 
}

void loop() 
{

         mpu.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);

         vx = (gx+15)/150; 
 
        vy = -(gz-100)/150;

         Serial.print("gx = ");
 
         Serial.print(gx);

         Serial.print(" | gz = ");
  
         Serial.print(gz);

  
       Serial.print("        | X = ");

         Serial.print(vx);

         Serial.print(" | Y = ");

         Serial.println(vy);
  
 
         Mouse.move(vx, vy);
  

         buttonState1 = digitalRead(button1);
  
         buttonState2 = digitalRead(button2);

  
           if (buttonState1 == HIGH)
                 {
    
                       Mouse.press(MOUSE_LEFT);
 
                       delay(100);

                       Mouse.release(MOUSE_LEFT);
   
                        delay(200);

                 } 
  
            else if(buttonState2 == HIGH)
               {

                     Mouse.press(MOUSE_RIGHT);

                     delay(100);

                     Mouse.release(MOUSE_RIGHT);
 
                    delay(200);

              }

          delay(80);

}

Hi sir, I am A.Durga Saranya. Sir the above code is for gesture based mouse control. It is working correctly but the movement of the mouse is not according to the movement of our hand. But the left click and right click are working correctly. When we move our hand in one direction it will move in some other direction. Sir, I contacted  you with the  hope that you will help me. Please tell me whether any changes should be made to the code. Please sir, I request you my project date is getting nearer and I have only three days. Please reply sir.