Everyone acts like it's their first day on earth getting my orders completely wrong, slow service and rude staff

Been to this location a number of times and always had a typical McDonald's experience - decent food, relatively modest prices, clean restrooms, minimum service. Today, I went in because I saw a break

Ordered a 2 cheeseburgers no onions and on the top of the burger it looked like there were none but took a bite and the bottom was covered in them. They were cooked into the burger as though they took