Rate My VGC 2021 Team

Question

Lapras-Gmax (F) @ Light Clay
Ability: Water Absorb
Level: 50
Gigantamax: Yes
EVs: 244 HP / 4 Def / 220 SpA / 36 SpD / 4 Spe
Modest Nature
IVs: 0 Atk
- Protect
- Thunder
- Hydro Pump
- Ice Beam

Zacian-Crowned @ Rusted Sword
Ability: Intrepid Sword
Level: 50
EVs: 245 HP / 69 Atk / 4 Def / 100 SpD / 92 Spe
Adamant Nature
- Protect
- Substitute
- Sacred Sword
- Behemoth Blade

Umbreon (M) @ Leftovers
Ability: Inner Focus
Shiny: Yes
EVs: 252 HP / 156 Def / 100 SpD
Bold Nature
IVs: 0 Atk
- Baby-Doll Eyes
- Moonlight
- Snarl
- Foul Play

Landorus-Therian @ Assault Vest
Ability: Intimidate
Level: 50
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- U-turn
- Fly
- Rock Slide
- Earthquake

Rotom-Heat @ Sitrus Berry
Ability: Levitate
Level: 50
Shiny: Yes
EVs: 180 HP / 252 SpA / 76 Spe
Modest Nature
IVs: 0 Atk
- Overheat
- Thunderbolt
- Nasty Plot
- Protect

Amoonguss (M) @ Focus Sash
Ability: Regenerator
Level: 50
EVs: 252 HP / 156 Def / 100 SpD
Sassy Nature
IVs: 0 Atk / 0 Spe
- Protect
- Spore
- Rage Powder
- Pollen Puff

I am stuck at 1300 to 1350 points in Team Builder.
https://pokepast.es/840705eb1ce45179 Here is the Pokepaste for the ev spread.
Pls if there is any changes then mention it. TQ :)

Comments

If you don't mind, are there any offensive calcs that you utilized to pick the evs? For example, Zacians evs seem very meticulously calculated, so I would like to see the basis if that is possible :)

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A way to deal with sun (specifically sleep powder venusaur) like lum berry landorus or goggles rotom would probably help. Speed EVs on sash amoonguss will catch a lot of opponents by surprise and will win you a lot of games, especially since you don't need as much bulk when you're surviving at least 1 hit anyway.