So what did the gods ever do directly to Raoul? What eye-for-an-eye revenge will he do to them?
Basically from what's been hinted in Chapter 78, they had used MC as a puppet which they used to entertain themselves, like making bets or causing issues, etc.
Plus, they let all the messed-up things happen to the few good people of the World, even-though they have the power to interfere and correct the course, especially when their own names are being used to cause mayhem and injustice.
MC is basically on a Revenge Spree against the Arrogant God's who view living beings as nothing but toys or puppets.