Practise in Duty Finder and then set up a party finder group. Make sure you're confident with the mechanics of the fights. I absolutely hate the Extremes but I've gotten at least three sets of wins (and a lot more Garuda Ex wins).
I think there's room for a style change in fights going forward but I struggled with Titan HM and got it eventually. Titan Ex is a horrible fight and even experienced groups hate it. There are other ways to gear up now. Gear up using ST and Hunts and then go back to these fights. It all helps.
