Program enters unwanted looping - Arduino

Question

The following code must, when pressing a button, execute the commands once. If the user holds the button pressed, the code should 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, however when connecting the Arduino to the electrical/electronic system, the same presents inaccurate behavior, sometimes obeying the routine, sometimes looping after the first push of the button.

Would anyone have any tips to help me? I’ve been trying to solve this problem for a few days, I’ve already re-scheduled several ways, but I always find 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;
  }
}