@A07236 As a last piece of personal advice from me, If you can’t manage to get any of your work back and are really on a stretch to finish your work because of the due date … and you simply don’t trust Pencil2D anymore, you can try other software.
I can recommend Opentoonz or Krita to speed up your workflow a bit, though these apps despite being free require a beefy computer, so be warned.
That said, those apps will likely help you since those have better drawing tools, some motion interpolation tools for opacity and layers (you can automagically move objects without having to redraw them), and even text layers.
Here’s also a list with the links to those apps and other free apps you could try if you want something else.
Edit: In case it’s not obvious you would need to export whatever work you still have from Pencil2D to a potentially new app by using transparent PNG’s. To do this go to
File > Export > Image Sequence > Check transparency 
> Then press the browse button, select a folder to dump all the images > If you want only the main drawings you did, check the Keyframes Only feature, if not then press OK and export.
Then import the image sequence into either Krita or Opentoonz normally and keep going. If you have multiple levels with backgrounds and effects, you have to export each separate layer (you can simply turn off the others) and export each layer individually then import them in the same way.