Save Problems and Issues : It Takes two

All this has already been answered. This is a small thread, all the information is already here.

No, once you have switched the machine off / closed the game, when you reload, part (or sometimes all) of the recent save data is gone.

There is no pattern, please see other people's posts.

Again, an example, you play one hour. it saves 10 times, when you reload the next day, the last 8 saves are gone, you need to play from save 2.

This is only resolved in MY experience by getting  to the end of  a chapter (or sometimes by getting to the end of a sub-chapter) but not always the case.

I only play local co-op

PS5 console used.

I have played at least 40% of the game twice and only on Chapter 6

I play online with my brother so he uses the friend pass. I am on a PS5 and he is on a PS4. I always invite him to play. I can visibly see that it says saving when we get through some areas. However, it seems there is a pattern in which it does not actually save unless we get through the whole chapter and get to a new one. I have repeated this and been successful for a few chapters already. At first when I wanted to close the game when I was still in the middle of a chapter I would just exit to the main menu and look back to see if it had saved and it would not. I would close the game completely and the save would still not be there. To reiterate, it seems that completing the entire chapter and getting to a new one does in fact save. Hope this helps.