PS2 god of war 2 Game Problem

I have encountered this situation, and I have been crushed to death several times. It should be the disk! PS2 can't read data, so it can't be displayed naturally! When you get to the finish line, you can press the start button and wait for three or four minutes! Press it again to see if there is a door! That's how I tried! Try a few more times! If it doesn't work, your CD won't work, just buy another one!