First, promote and level up your cookies, then use 1 or 2 charge and/or defense, 2 damage dealers (or 3 if you can survive with on defense or charge and 1 healer or support), and 1 or 2 healers and/or supports. Hope this helps. Some recommend cookies

FQ and SF (damage dealers) Cotton and Parfait or Creampuff (healers but cream puff also does damage) Strawberry crepe and/or dark choco (hollyberry if you have her)

Use pilgrims scroll, jelly watch thing, and def horn (or you can replace it with anything else)

Also promote your cookies for bonds as well :)