How to get an old savefile

Hi,

is it possible to get an old savefile from an Projekt?

I wanted to delete just an Icon in the Projekt, but unfortunately I deletet anything in the Projekt.

In the moment I wanted to undo these task via ctrl.+R, my browser didn’t work-well, so that I had to restart it.

When I now open the Projekt there is just an white sheet.

My question is if I can somehow get to the savelogs to pick a version before the disaster?
Or another way of restoring my projekt?

Thanks for the help in advance