@ErenAngiolini shoot my only other suggestion is in the file drop down to “recover auto save” but seems like that won’t work either. the dungeon door sculpting tutorial by grant abbit touches on a lot of the same points if you want to switch up beginner tutorials before going back to donut!
@ErenAngiolini you can probably recover by relaunching and selecting “recover last session”. blender also keeps an archive and should be auto saving in the background, i just can’t remember where the option is, but it saves to your hard drive!