Having trouble with the pwt

[samrules4]

like the title says, i'm having trouble with the pokemon world tounrament, the world leaders to be specific, i hope i don't have to raise completely new pokemon... if my team is seriously that bad i would like someone to let me know.

    Spoiler:- my team:

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unfezant brave nature big pecks
quick attack
toxic
tailwind
fly

magnezone brave nature magnet pull
thunderbolt
volt switch
flash cannon
substitute

lucario jolly nature inner focus
close combat
dig
shadow ball
extremespeed

serperior mild nature overgrow
coil
leaf blade
aerial ace
toxic

azumarill bold nature huge power
surf
aqua tail
ice punch
rain dance

zoroark with hasty nature
dark pulse
flamethrower
shadow claw
nasty plot

 

well, i'm now rebuilding my team to the natures suggested:
steps completed:
1.catch a ditto
2.hatched zoura with hardy nature
3.caught a new marill and golduck
4.successfully EV trained zoroark, placed 1st Pokemon into battle box
5.hatched a marill with lonely nature (it was the closest i could get to adamant)
6.caught a magnemite with mild nature (again, closest i could get to modest, i also changed its ability to sturdy)
7.successfully EV trained marill, placed 2nd pokemon into battle box
8.first world leaders win

current goals:
finish azumarill's moves
find a held item for azumarill