So does that mean if I wanna cheat on FaceIt with triggerbot (on press), I can buy the CSGO MultiHack NON-League and still be able to play FaceIt league?
Yes, precisely that. The non-league version is fully UD on Faceit. If you want something more for ultra legitness, swag and professionalism, go for the League version and wreck scrubs @ ESL/CEVO.