We do everything step by step.

1) Go to Counter Strike 1.6
2) Open the console "~"
3) Write this list of commands there

4) Press Enter.

But it is not a fact that if you leave the game and enter again in 1 or 2 hours, then these commands will work. Therefore, it is better to write these commands in your config. And so I will move directly to this.

1) I go to the cstrike folder, which is located in our folder with the game C:\Counter Strike 1.6\cstrike
2) I see the config.cfg file.
3) Write the same list of commands there (at the very bottom).
4) Save.
5) Restarted Counter Strike 1.6 and voila,all commands workImage

And I also want to write you a command like cl_crosshair_size. This command is intended for standard crosshair changes. In our case, we need to set "~" cl_crosshair_size "small" in the console, so that the sight becomes much smaller than usual.