I want to get the IP, Hostname and OS information of all PCs in the Local Network

[Nahita]

I want to get the IP, Hostname and Operating System information (Linux, Win, etc.) of the Computers on the Local Network. I can get the IP of the computers on the network by pinging them, but I also need to get the hostname and the operating system they use. I tried the Nmap library, but unfortunately I couldn't get information beyond the IP. I think there is a problem with the authorization part. I am waiting for your suggestions on this matter. If it were you, what kind of solution would you suggest to this issue?

My goal will be to remotely put computers to sleep or shut them down after detection.