@Cuddly Lopunny
You don't have Psychic Memory for Silvally, I assume? Strength gets boosted by the field, so try using that. Nature Power is also really good, as it turns into Acrobatics. You don't seem to have many mons in your team that can learn Nature Power, so you might have to check your PC. If you need to train new mons, you could give Rufflet/Braviary a shot, you can catch one in the route with the Crustle puzzles. Psychic or Ghost-types are few and far between this point in the game, so if you haven't caught any beforehand, you're out of luck in that regard.