LED blinking at same time instead of reciprocally

Using Arduino LEDs and Multiplexing
#1

So I was starting with LED blink with arduino uno , First I blink using the pin 13 which worked fine then I decided to use PIN 12 as well, but when LED on 13 is lit, LED on 12 is off and vice versa , so I set the code like this below

int LED_YELLO_PIN = 13;
int LED_GREEN_PIN = 12;



void setup() {
  Serial.begin(9600);
  pinMode(LED_YELLO_PIN, OUTPUT);
  pinMode(LED_GREEN_PIN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED_GREEN_PIN, HIGH);
  digitalWrite(LED_YELLO_PIN, LOW);
  delay(1000);
  
  digitalWrite(LED_YELLO_PIN, HIGH);
  digitalWrite(LED_GREEN_PIN, LOW);
  delay(500);
}

and here are unexpected the result : https://www.youtube.com/watch?v=mOlHnypKmlQ

How can I male these two LED blink reciprocally ?

#2

got it working the wiring circuit was wrong earlier

#3