Using Serial Monitor to control 2 servos

This is the code that I have to control a servo, but if I had a second servo, I don’t understand how to add it into the program and how I would write it in the serial monitor. The first set of code is where I have one servo that works from 0-90 degrees and the second set was my attempt of adding in a second servo but I got stuck and now I am here.
Code 1:

#include <Servo.h>

const unsigned int MOTORX_PIN = 9;
const unsigned int MOTOR_DELAY = 15;
const unsigned int SERIAL_DELAY = 5;
const unsigned int BAUD_RATE = 9600;

Servo servo_x;


void setup() {
    Serial.begin(BAUD_RATE);
    servo_x.attach(MOTORX_PIN);
    delay(MOTOR_DELAY);
    servo_x.write(1);
    delay(MOTOR_DELAY);
}

void loop(){
  const int MAX_ANGLE = 3;

  char degrees[MAX_ANGLE + 1];

  if(Serial.available()){
    int i = 0;
    while(Serial.available() && i < MAX_ANGLE) {
      const char c = Serial.read();
      if (c != -1 && c != '\n')
        degrees[i++] = c;
        delay(SERIAL_DELAY);
    }
    degrees[i] = 0;
    Serial.print(degrees);
    Serial.println(" degrees. ");
    servo_x.write(atoi(degrees));
    delay(MOTOR_DELAY);
  }
}

Code 2:

#include <Servo.h>

const unsigned int MOTORX_PIN = 6;
const unsigned int MOTORY_PIN = 7;
const unsigned int MOTOR_DELAY = 15;
const unsigned int SERIAL_DELAY = 5;
const unsigned int BAUD_RATE = 9600;
String readString, servo_1, servo_2;

Servo servo_x;
Servo servo_y;


void setup() {
    Serial.begin(BAUD_RATE);
    servo_x.attach(MOTORX_PIN);
    servo_y.attach(MOTORY_PIN);
    delay(MOTOR_DELAY);
    servo_x.write(1);
    servo_y.write(2);
    delay(MOTOR_DELAY);
}

void loop(){
  const int MAX_ANGLE = 3;

  char degrees[MAX_ANGLE + 1];

  if(Serial.available()){
    int i = 0;
    while(Serial.available() && i < MAX_ANGLE) {
      const char c = Serial.read();
      if (c != -1 && c != '\n')
        degrees[i++] = c;
        delay(SERIAL_DELAY);
    }
    degrees[i] = 0;
    Serial.print(degrees);
    Serial.println(" degrees. ");
    servo_x.write(atoi(degrees));
    servo_y.write(atoi(degrees));
    delay(MOTOR_DELAY);
  }
}

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