This article will guide you on how to set up gravity in Counter Strike.
Steps

Step 1. Start Counter Strike
Make sure you turn on the console.

Step 2. Click “Create server” and set the parameters you want
Then open your console (by default, press the ~ key).

Step 3. In the console enter sv_gravity and some number (of your choice)
Remember that the larger the number, the stronger the gravity (-999-999999).

Step 4. Done
Advice
- The described method only works if you are the server administrator.
- This code can only be entered from the host server.