Trying to beat Dungeon of Trial 21f, I am lacking an awoken/MLB Aristela, Melia, and/or Rem. My current most efficient team is as follows:

Gerald - Iris Bunny Dress (for 50% ally dmg down) / Legend of Ganan (for para negate) / Destina (for hp recov, dont have many options here)

Mako - Insect Goddess Neck (for accuracy boost + arts gen) / Guts (for heal i dont have optima raid yet) / Mako Knuckle (obvious)

Awoken Rosetta - True Asterisk (obvious) / Insect Goddess (idk what to put here because i dont think it stacks. Goku uniform? I dont have any other accuracy supports) / Rosettas Pareo (20% magic boost)

Awoken 2 - Twin Magical Guns (for enemy accuracy down) / Relic Brachium (in case Gerald dies, maybe just opt for the 2nd 5 star heal? Ive tried that and still didnt work out but maybe?)

I get the final boss to its last little bit of health and suddenly it starts dealing damage through Gerald, I really don't know what to do at this point lol.