Answer 1:

Make sure all PCs are connected to same network using lan cable or wifi. On the pc that you want to use as server create any game with bots i.e. casual/competitive/deathmatch etc. Once created open the console using ~ key on the keyboard. If console is disabled, go to settings enable it. Once enabled, type the following comand and press enter.
status
Once you enter that command, you will see a of stuff will be shown in console. Among that will be your local ip address. It will look something like this.
192.168.1.2:2308
Copy/Save that address. Keep the game running in server pc. Now go to another pc that you want play the game on. Launch game and type following command in console.
connect 192.168.1.2:2308
Replace the above ip with the one of your server pc. Once all other pcs have joined, you can play together. Following are some of the useful consle commands for the game to be used on the server pc.
bot_kick #kicks all bots in game
mp_restartgame 1 #restarts the game server
Enjoy !

Answer 2:
Make sure everyone who wants to play are on a same network i.e all connected to a same wifi router, hotspot or lan connection .after that all players has to open their games.Then one of them should start a competitive match and then after the match starts …just press ESC key to start console ( command prompt for csgo, make sure to enable it by going into game settings) then in console type : get status then press ENTER .you will get an ip ,then tell your friends to open their console and type : connect IP PROVIDED (eg: connect 192.168.1.1) and their you go …you can connect any number you want and play together .

Answer 3:
If you are all on same network, just create the server and type in console “sv_lan 1”. tell your friends the ip address that can be Found by typing “status” in console. They can then connecr by typing “connect” followed by the ip address.

Answer 4:
Well, Most of the people dont know how to create GO server on Lan but no problem,
First of All open Cs Go. Click on offline with bots… then choose map whatever u want. Once the sv connects .. go to console by pressing ~
Type sv_lan 1 ,,,, after that type status and chrck the ip and send it to friends.. Say them to type in console .. connect “ip”.
Note : Ur network should be same!
Thanks
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Verify the game version before following LAN commands

These commands belong to an older CS:GO setup and should not be assumed to apply unchanged to another release. Valve describes Counter-Strike 2 as an upgrade to CS:GO; follow the official material for the specific game and build installed on each machine.

For a hypothetical local session, first confirm the same game version, authorized network and reachable host. Test with one client before configuring the whole group. Record the exact error rather than randomly changing ports or disabling protection. A private address displayed by one computer is a network observation, not a reason to expose the host publicly or turn off its firewall.