Hi! Thanks for the great feedback!
The error sound along with the loss of life only occurs when the time for your order runs out. Unless there's a bug we don't know about (which is very likely), you should have a success sound effect play after you complete the burger (The recipe is on the top left) with all the ingredients in the right order.
The spawning of ingredients is not completely RNG, there are certain biases in place (that kick in at specific times) to help the with the ingredients they need.
Thanks for playing the game!