Hi @Deef_13, thanks for posting on the Community!
I'm sorry to hear about these missing files. If the files were successfully uploaded, could you try checking this page to see if they're recoverable from the site.
If the missing files weren’t syncing to your account, then it wouldn’t be possible to recover them from the site.
However, it might be possible to recover the files from the local machine from the recycle bin, or using a third party app or service to do so.
Let me know how it goes!