Hi Faiz Qureshi,
Thank you for reaching Microsoft Community. I'm sorry to hear that you lost your personal data on your Surface Laptop 3. We understand how frustrating and stressful this situation is especially that the files lost were very important.
Before we proceed, I would like to inform you that we do not have a special tool here that we can use for data recovery, but we'll still try to assist you in sorting this out to the best of our capabilities.
Firstly, I would recommend checking your Recycle Bin to see if your files are still there. If they are, you can simply restore them to their original location. To do this, right-click on the file or folder you want to restore and select "Restore".
If the files are not found on the Recycle Bin of the Surface, please try to access your iCloud account through web and see if those files that we are looking for are still stored on the cloud.
Let me know how it goes.
Kind regards,
Marrion