Certificat EFS cryptage

How to detect the EFS key that I lost during formatting and reinstallation?
Because I have two files in RAR extension that I can no longer open, because it asks for the certificate owner. I didn’t care that this was going to have problems, the encryption is just a click away.

I have to go find the private, public key certificate to be able to open the encrypted file. It is essential to have to recover them.