Go to the Auto-Recover File Location field. Here, you will see the location of the auto-save directory. By default, it is set to C:\Users\user\AppData\Affinity\Photo\1.0\. However, you can always change that to your preferred location by clicking the Browse button.
Another option for accessing the auto-saved location would be to navigate to this path.
File ->Info ->Mange Versions -> Recover Unsaved Documents.
Make sure you save the file once you open it.
Last but not least, I think if still you are not able to find your file you can use third party data recovery program. You can use Stellar Free Data Recovery Software to recover you those file. It supports more than 300 files to recover. It is easy to use and recover more efficiently. I hope it will work for you.
