You can use them only on the created by you local server with bots or friends. After all, these console commands are officially in the game.
Thank you for the information provided ❉ | RusOne | ✔. But before that, do not forget to enable the option in the game parameters You must enter console commands in the developer window using the key '~' (Ё). If you are looking for console commands for Counter-Strike: Global Offensive, then here you will find all the console commands for the CS!