Hello! Melpomene here again to discuss the conflict in the Bacchae. I would say the main conflict is that praising Dionysus is forbidden in Thebes and Dionysus aims to change that. It's a Pentheus vs. Dionysus Grecian style showdown of wit and skill. While Pentheus fights to keep law in his city, more and more maenads leave everyday. Dionysus amasses an army of them and further encourages Pentheus to eradicate him and his followers. So the main conflict is one between a disbeliever and a god, classic.