How can I simulate an 8 LED (complemented) pattern device?
it is an interesting circuit and it works correctly although you do not get what you expect.
It blinks and in less than one second turns off:

The circuit, how it is made will work only once, only one time, the shift register circuits, the 4015, are never reset so you need to add some logic to that circuit to reset the 4015 after all LEDs are turned off
It is so fast because the frequency you made with the 555 is 48KHz, that is so fast for human eye, you need to choose a frequency close to 1Hz or 2Hz, by using a capacitor of 10uF instead of 1nF and increasing the resistors, you can check multiple references in the internet, I leave one in here that may help you https://ohmslawcalculator.com/555-astable-calculator