elite 4 troubles

ive reached the elite four and having trouble beating them. i was selected to be team aqua leader but need help since my highest pokemon are azelf n uxie lvl 50. what is a good aqua team to use against elite 4? what team is best overall?

to battle the elite four you dont have to use ur aqua pokemon u can use any i would say you need a team in the levels 58-68 to copletley beat the elite four as the strongest pokemon is a garchomp lvl 66

i'll trade u one if you'd like. just for the elite four, then you give it back. otherwise, just go around and vs seeker trainers to get higher levels

idk why, but i beat the elite four with level 44-48's. i had six pokemon, each was a different type.