Hello, YohioZx
Welcome to the Microsoft Community.
Thank you very much for your feedback. I have carefully read the information and problem description you provided. You mentioned that some files cannot be found in Explorer.
I understand the trouble this problem has caused you. Please don't worry. You can also try the following methods to recover your files. You can refer to the link below for detailed steps.
Recover lost files on Windows 10 - Microsoft Support
If these files are important personal files of yours, you have tried the above methods, but the files have not been recovered. In the current situation, I have no other better suggestions for you. I suggest that you may need to contact the technicians of a data recovery company. They will provide you with more professional tools and methods to help you solve this problem and provide you with more useful information.
Best regards
Brian - Microsoft Community Support Specialist