interesting game with the maximum probability of winning by the dealer

i am a mba student at guru nanak dev university in india . we have a fest at my university . i have bought a stall there to make students play games . can you please tell me about any game which has the maximum probability of winning by the dealer . and can you please explain me that game . i don't even know A of gambling . the games already sold out are black jack and lucky seven . i have approached this forum because the person who has provided stalls has disturbed me a lot in many different ways like charging higher money for stall from me as they feel jealous from me and they even tried to beat me . so i request you to help me out . if possible add me on whats app +91-8591859000 .