how could I improve this team?

[executeorder66withfries]

I'm not that good at reg I, but I have had some success with this team. however, it has some pretty bad matchups against eternatus teams and IRC teams, especially if calyrex is holding the clear amulet. what could I change to improve these matchups?
good boi (Zamazenta-Crowned) @ Rusted Shield
Ability: Dauntless Shield
Level: 50
Tera Type: Grass
EVs: 100 HP / 4 Atk / 236 Def / 4 SpD / 164 Spe
Impish Nature
- Body Press
- Wide Guard
- Protect
- Heavy Slam

death lizand (Miraidon) @ Choice Specs
Ability: Hadron Engine
Level: 50
Tera Type: Fairy
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Dazzling Gleam
- Draco Meteor
- Electro Drift
- Volt Switch

Chomps (Chien-Pao) @ Focus Sash
Ability: Sword of Ruin
Level: 50
Tera Type: Dark
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Icicle Crash
- Throat Chop
- Sacred Sword
- Protect

Rawr XD (Incineroar) @ Assault Vest
Ability: Intimidate
Level: 50
Tera Type: Grass
EVs: 244 HP / 4 Atk / 188 Def / 68 SpD / 4 Spe
Impish Nature
- Fake Out
- Knock Off
- Flare Blitz
- U-turn

graf (Farigiraf) @ Electric Seed
Ability: Armor Tail
Level: 50
Tera Type: Dark
EVs: 236 HP / 164 Def / 108 SpD
IVs: 0 Atk
- Helping Hand
- Protect
- Hyper Voice
- Thunder Wave

leroy jenkins (Urshifu-Rapid-Strike) @ Choice Scarf
Ability: Unseen Fist
Level: 50
Tera Type: Water
EVs: 4 HP / 252 Atk / 36 Def / 68 SpD / 148 Spe
Jolly Nature
- Surging Strikes
- Ice Spinner
- U-turn
- Close Combat

 

[Pengu]

heyo executeorder66withfries ! Welcome to Smogon. Unfortunately I cannot rate this team as each RMT should have at least 3 lines of explanation for each Pokemon. This can include reasons for moves, EVs, Tera types, natures, what role it fills, what it beats, how it complements the team, etc. etc. I suggest checking out the team showcase for some ideas on what your RMT could / should look like, also check out the RMT Rules for more info!