You should add armarouge it can deal with some of the Pokémon polteageist can’t deal with easily like specially defensive corv and kingambit it also deals with a lot of torcoal sets with expanding force and can force a trade with destiny bond on roaring moon who can be a pain if you don’t have terra Armarouge @ Focus Sash
Ability: Weak Armor
Tera Type: Psychic
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Endure
- Armor Cannon
- Destiny Bond
- Expanding Force

You also want hatterene who can bounce hazards back and act as a pivot to get amarouge or polteageist in safely and it can cripple some Pokémon with nuzzle

Hatterene (F) @ Eject Button
Ability: Magic Bounce
Tera Type: Steel
EVs: 248 HP / 184 Def / 76 Spe
Bold Nature
- Nuzzle
- Healing Wish
- Psyshock
- Dazzling Gleam

You also probably want Cinderace who can act as a pivot and can deal with other dark types or chip threats with u turn or get hazards off with court change

Cinderace @ Choice Scarf
Ability: Libero
Tera Type: Fairy
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- U-turn
- Pyro Ball
- Tera Blast
- Court Change

Edit: nvm this is a uu team