@altria oh god I didn't see the mistake, thanks, I had to spend a lot of time with RPCs to understand it, but it turned out to be so simple.
Multiplayer made with ENETMultiplayerPeer and both the client and the server are made in one program, the client sends RPCs to the host and host checks them, I don’t know if this is right, but I don’t want to do two programs 🙂