Rocket flight at low pressure

Hello! This is my first time working with Arduino. At school, we were asked to make a water rocket that works when the pressure drops. It so happened that no one in my team knows this programming language. Please help me write the code!!!

#include <VoltBroSensors.h>
#include <Servo.h>
#include <VB_BMP280.h>

#include <VM-MPU9250.h>

VB_BMP280 barometer;
VM-MPU9250 imu;
Servo lockservo;
#define testBtb A3// Пин тестовой кнопки
#define beeperPin A1// Пищалка
#define
#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978
int melody[] = {

  NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};

// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {

  4, 8, 8, 4, 4, 4, 4, 4
};

bool blinkState           = false;
bool barometer_connection = false;
int servoPin = 9; // сигнальный провод от серво на порт 9
int val;
void setup() {
    pinMode(LED_BUILTIN, OUTPUT);

    Serial.begin(115200);
    while (!Serial) {
        ; // Ожидаем когда появиться Serial Port через USB
    }
    setupBarometer();
    pinMode(servoPin, OUTPUT);
  Serial.begin(9600);
  Serial.println("Servo is ready");
}
void loop() {
    if (barometer_connection) {
        barometer.read(); //Чтение параметров барометра
        Serial.println((String) "BMP280: P=" + barometer.pres + " MM.PT.CT - T=" + barometer.temp + " *C - B=" + barometer.alti + " M.");

        // Моргать диодом изображая активность
        blinkState = !blinkState;
        digitalWrite(LED_BUILTIN, blinkState);

        delay(500);
    }
}

void setupBarometer() {
    Serial.println("Initalizinfg I2C Devices...");

    //Высота текущей точки над уровнем моря, если не задать то 0
    barometer.start_altitude = 0;

    // Ждем подключения пока не сможем подключиться
    while (!barometer_connection) {
        Serial.println("Checking connection with device...");
        barometer_connection = barometer.begin();

        if (barometer_connection) {
            return;
        } else {
            Serial.println("BMP280 conncetion was not established");
            delay(500);
        }
    }
}
void servoPulse(int pin, int angle)
{
  // convert angle to 500-2480 pulse width
  int pulseWidth = (angle * 11) + 500; 
  digitalWrite(pin, HIGH); // set the level of servo pin as high
  delayMicroseconds(pulseWidth); // delay microsecond of pulse width
  digitalWrite(pin, LOW); // set the level of servo pin as low
  delay(20 - pulseWidth / 1000);
}

Sincerely, Margarita.

You should describe how you expect this to work. Also, upload a drawing of the connections. Include a picture of the project wiring.

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