I played that a while back. The hardest part for me was the flying type lady. My team was Decidueye, Ribombee, Golisopod, Toucannon... I had to boot up my old game to remember my last two, but they are Snorlax and Alolan Dugtrio. Naturally, my Dugtrio and Toucannon had to take the lead against the flying lady, and her steel and flying dude, whose name escapes me for some reason. Looking at your team in the lower comment I would recommend more type diversity, particularly regarding the lycanrocs, since even if they are different forms they share nearly all the same weaknesses, and they and inceneroar are all weak to fighting, plus Decidueye and inceneroar are both weak to flying. Just as a suggestion, Golisopods are fire. Mine's moveset is First Impression, Liquidation, Brick Break and Leech Life, the last of which is so OP, especially with a metronome or Big root for better damage and/or healing. Even though he doesn't have type advantage pretty much anywhere in the elite four, I remember mine being quite useful.