Osiris ransomware question

Hello! My mate's laptop is infected with Osiris ransomware and it is complete mess. I've tried to use different antiviruses, antimalware tools, shadow copies recovery tools like ShadowExplorer, Recuva - but the result is 0 files decrypted :facepalm:. I found a lot of guides in Google like this that promote SpyHuter tool and swear it will help to recover all files. So I want to ask you can this tool help me to remove Osiris ransomware or it is another fraud?
And it is a way to recover files without paying hackers?