Arduino, matlab and servo control

help needed,this code below is for one servo ,suppose if i have 5 servo how do i change the void loop?

 Serial.begin(9600);
    
  servo1.attach(6);
   
   
}


//LOOP--------------------------------
void loop() {

 if( Serial.available() ) 
    {
        int x = Serial.read();
        servo1.write(x);
    }
  
}