How are network games implemented in unity?

Question

Unity

I found some uNet, but as I understand it is outdated. How is networking currently implemented? Do not judge strictly, I'm here recently) tell me which way to dig.

Answer 1

https://docs.unity3d.com/Manual/UNet.html
are you talking about this uNet ??
there, general principles are described and there is a low level api for those who need to write and control everything themselves.

Users building network infrastructure or advanced multiplayer games. These users should start with the NetworkTransport API.

Answer 2

Use unity photon, on it all top games are made in unity