How to get insta-VAC ban-
1) Download Cheat-Engine.
2) Open CS:GO.
3) Join an online VAC Secured server.
4) Open Cheat-Engine
5) Force SV_CHEATS to 1.
And you are done.
I recommend doing this on all your smurf accs ,you will get a dlore on ur main ( ͡° ͜ʖ ͡°)