// https://wokwi.com/projects/421427942117502977

# include <Servo.h>

Servo myservo;

# define button 7
# define servo  9

void setup() {
  myservo.attach(servo);

  pinMode(button, INPUT_PULLUP);
}

bool servoState;

void loop()
{
  while (!digitalRead(button)) delay(25);
  while (digitalRead(button)) delay(25);

  if (servoState) {
    myservo.write(100); 
  }
  else {
    myservo.write(10); 
  }

  servoState = !servoState;
}