I've never done competitive Pokemon before, so this is all still very new to me(I've always been a casual player). Please rate my thoughts for my team below! Any suggestions regarding my Pokemon, their moves, abilities, natures, items, and EVs is greatly appreciated! I also don't know much about strategy, so if you have any advice, please tell me! Thanks!
Toxtricity, Item- Throat Spray (Gigantamax)
Nature-Timid
Ability-Punk Rock
Evs-252 Sp. Atk/4 Sp. Def/252 Speed
-Shift Gear
-Overdrive
-Boomburst
-Sludge wave
Corviknight, Item-Leftovers
Nature-Impish
Ability-Pressure
Evs- 252 HP/200 DEF/56 Sp. Def
-Body Press
-Brave Bird
-Roost
-Defog(Might replace with Iron Head)
(Alolan) Ninetails, Item-Light Clay
Nature-Timid
Ability-Snow warning
Evs-252 Sp.A/4 Sp.D/252 Speed
-Freeze Dry
-Moonblast
-Aurora Veil
-Encore
Dragapult, Item-Life Orb
Nature-Jolly
Ability-Infiltrator
Evs-252 Atk/4 Sp. Def/252 Speed
-Dragon Darts
-Sucker Punch
-Phantom Force
-Dragon Dance
Rhyperiror, Item-Leftovers(I might need to change it so I don't have two of the same items)
Nature-Impish
Ability-Solid Rock
Evs-240 HP/28 Atk/240 Def.
-Curse
-Rock Slide
-Earthquake
-Ice Punch
Cinderace, Item-Life Orb(Once again, I might need to change)
Nature-Jolly
Ability-Libero
Evs-252 Atk/252 Speed/4 Hp
-Pyro Ball
-High Jump Kick
-Sucker Punch
-Bounce
Thanks again if you answer!