SS OU need help trying to build a stall team

[memowscout]

Corsola-Galar @ Eviolite
Ability: Cursed Body
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
IVs: 0 Atk
- Stealth Rock
- Strength Sap
- Will-O-Wisp
- Night Shade

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 248 HP / 252 Def / 8 SpD
Impish Nature
- Spikes
- Leech Seed
- Thunder Wave
- Power Whip

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Toxic Spikes
- Scald
- Haze
- Recover

Ditto @ Choice Scarf
Ability: Imposter
EVs: 252 HP / 4 Atk / 252 Def
Relaxed Nature
IVs: 0 Atk / 0 Spe
- Transform

Hydreigon @ Leftovers
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Substitute
- Dark Pulse
- Flash Cannon

Corviknight @ Leftovers
Ability: Pressure
EVs: 248 HP / 208 SpD / 52 Spe
Careful Nature
- Brave Bird
- Bulk Up
- Substitute
- Roost

 

[tysgod]

Make sure to have at least 3 sentences explaining your team. Also add some sprites for decoration and gives us a visual. About your mons Ditto and Corsola Galar they are in a bad position in the metagame and recommend switching out. The other mons in your team are defensive and too slow with no momentum and no offense.