Dead Cells

There is no suitable achievement to describe this tip, so I’m writing here.
Many people don't know or don't understand how to do the save trick. Some people think that they need to copy it to a flash drive and then put it back, etc. But everything is much EASIER!
Please note that in the main menu you have the item “Current save” and for example “slot 1” , click and inside you will see that you have as many as 7 slots for saving.
How to do the trick, having read to this line, I think you understand, but I’ll describe it, you never know.
We start the game, let’s say we got to the “Gatekeeper”, go to the menu, go to the sub-menu with saves, press the button (copy) and paste it into another slot.
Let's say the boss hit you and you want to start over. Exit to the menu, go to save, select the slot into which you copied the previous one and click on it “copy” and rewrite it back to the slot where you received damage or failed wounds. And we play. And so on in a circle. There are 7 slots, but for an infinite number of attempts you will only need 2.