Video for those who are lazy to read:

To play with other players in multiplayer, you needed:

1)RadminVPN: DOWNLOAD

2)FCAV Project Last Version: MAIN PAGE

Next parts of tutorial.

When you downloaded the Radmin - install it on your PC (available only for Windows). 

3)Connect to Main Far Cry 1 RadminVPN Server where most of players are gathering:

Network name: farcry_original

Password: cell123

4) Install FCAV(OR SKIP THAT POINT IF YOU HAVE LAUNCHER): 

You can download launcher from here: DOWNLOAD FCAV LAUNCHER

If you want to install the mod manually, just extract two folders from archive into game root folder(it's not bin32).

5) The next part will be add the Far Cry(or Allow All Apps) into Firewall Exceptions of Radmin:

To make this, launch Far Cry first so it showed in radmin Firewall Exceptions partition.

!!!Also, important notice if you wanna create your own servers and still can't launch it(others don't see it), be sure far cry is also allowed in windows defender firewall -> check the boxes: "Private" and "Public"

Addition info(clickable)

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6)Join our discord to find someone for playing in MP: discord.gg/farcry1 

7)Create your own server.

You can download our config for more stable playing: CONFIGS
Put it by following path:
Far Cry Folder\FCAV_Files\SProfiles <<< (If you don't have such folders, you can create it manually inside root game folder)

Launch the FCAV out of following path:

----> Far Cry 1/Mods/FCAV/game.bat or via Launcher

Then, go to Multiplayer, then "Create", then "Load Profile" and select there "radmin". After this, you can just play on your server with other players. Other players will able to see your server in server-list of MP partition in the FCAV mod in the game.
Finish.

Basic Parts were: 
1) Download and install radmin
2) Correct installing of FCAV Mod (always as clear one or via launcher)
3) Joining Radmin Server and add the Far Cry into Radmin Firewall Exceptions and in windows firewall exception
4) Find players and then play.
5) Check the actual maps, especially TFM maps. 

P.S.: All profiles and settings are moved in root game folder out of mod folder. And after each reinstallation of the mod, nothing will be reseted, since these files simply will not be affected.