Your files are encrypted with an offline key. Therefore, first try the EmsiSoft decryptor, if it fails to decrypt encrypted files, then security researchers have not yet obtained the offline key. In this case, it remains only to use ShadowExplorer and PhotoRec (https://www.myantispyware.com/2019/12/04/how-to-recover-encrypted-files-ransomware-file-recovery/). If these free tools did not help to recover encrypted files, then you just have to wait for the moment when decryption becomes possible. Follow the news on our website.
How to decrypt .pohj offline