Hey guys,
I just knew that amounts of quicksaves and autosaves are limited, an important quicksave before the checkpoint where I can decide to help Reed or "Songbird" is overwrote after many explorations on one chosen path.
Actually, the quicksaves and autosaves before 14th Oct are all missing.
The cloud saves are inactive since connection to the server always fails here.
Is there any method I can recover the missing quicksaves?

If you play via HDD remants of the old filed may be still somewhere but you would have to find them and know how to ressurrect them - you would need a very knowledgeable friend or specialist and specific software for that.

On a SSD that is constantly rewritten these dataghosts are gone for good.

If you have another computer try to make fresh install and connect to the cloud in the hope it will have the old saves.

You can save important steps of the game eternally via "manual" save - these wont be overwritten unless you yourself do so!