How to use a cfg file in cs:go :

1. Open Steam and right-click on cs:go in your library, then click to Manage -> Browse Local Files
2. In the file manager window that pops up, go to csgo -> cfg
3. Drag and drop your cfg file in the cfg folder
4. Open cs:go
5. Type "exec <name of your cfg file>" in the console to test it out. for example: "exec speedrun" will execute the cfg file called "speedrun.cfg".