Program goes into unwanted looping - Arduino

The following code should, when a button is pressed, execute the commands once. If the user holds the button pressed, the code must also be executed only once, as if it were just a pulse on the button. When you release the button, the system should be ready to repeat the routine.

I tested using the Serial Monitor, and the code meets my need, but when connecting the Arduino to the electrical / electronic system, it presents inaccurate behavior, sometimes obeying the routine, sometimes looping after the first button.

Would anyone have any tips to help me? I am already trying to solve this problem for a few days, I have already re-programmed it in several ways, but I always encounter this same problem.

int x=0;
int ledVermelho = 8, ledVerde = 9, sensor = 12, aspersor = 7, cooler = 5; 
void setup() {
  pinMode(ledVermelho, OUTPUT);  //   seta o pino 9 como saída
  pinMode(ledVerde, OUTPUT);     //   seta o pino 10 como saída  
  pinMode(aspersor, OUTPUT);     //   seta o pino 11 como saída
  pinMode(cooler, OUTPUT);       //   seta o pino 12 como saida
  pinMode(sensor, INPUT);        //   seta o pino 13 como entrada
  digitalWrite(aspersor, LOW);   //    desliga o aspersor
  digitalWrite(cooler, LOW);            //    desliga o cooler
  digitalWrite(ledVermelho, LOW);       //    desliga o led vermelho
  digitalWrite(ledVerde, HIGH);         //    liga o led verde
  Serial.begin(9600);
  Serial.println("aguardando ");

}
void loop() {
  if(digitalRead(sensor)){
    if(x==0){
      digitalWrite(aspersor, HIGH);
      digitalWrite(ledVerde, LOW);
      digitalWrite(ledVermelho, HIGH);
      Serial.println("aspersor ativado");
      delay(1000);
      digitalWrite(aspersor, LOW);
      digitalWrite(cooler, HIGH);
      Serial.println("cooler ativado");
      delay(3000);
      digitalWrite(ledVermelho, LOW);
      digitalWrite(cooler, LOW);
      digitalWrite(ledVerde, HIGH);
      Serial.println("processo concluido");
    }
    x=1;
  }
  else{
    Serial.println("sensor desativado");
    x=0;
  }
}