Need help with my team

I’am playing for the first time and i’am hard stuck in the battle against mega stunkfisk in helios city (the guy from perfect base). i’am playing in hard mode with my friends so i cannot change that.

He just oneshots almost all my pokes.
for a while i think my entire team is bad besides my fraxure, but its working for the moment. but now i really think i need to change. I just want a good team/balanced to have in the game from now on.

My current Team is:

Additional Info: I have a 6 31 IVs Ditto, so i can breed some good non delta pokes, but i dont know what use. And i have Pokérus strain, so i can easily train ev in the future pokes.

Delta Charizard Lv 45 @ Spell Tag
Ability:Spirit Call
Random ev spread, is my starter. have points in all things
___ Nature: Bashful
IVs: 13 HP, 16 Atk, 31Def, 3Sp.a, 15 Sp.D, 31Speed

  • Shadow Ball
  • Frost Breath
  • Cut (The game dont let me replace this shit for some reason)
  • Dragon Breath

Fraxure Lv 45@Life Orb
Ability:Mold Breaker
EVs: 252 Attack. 252, 6 hp
___ Nature: Adamant
IVs: 31 Hp, 31 Atk, 30 Def, 31 sp attack, 10 Sp.D, 31 Speed

  • Dragon Rage
  • Dragon Claw
  • Slash
  • Dragon Dance

Blaziken lv 45 @Charcoal
Ability: Speed Boost
EVs: All random too
___ Nature: Timid
IVs: 0 hp, 11 attack, 28 def, 19 sp a, 31 Sp D, 3 Speed.

  • High Jump Kick
  • Fire Blitz
  • Work up
  • Slash

Lucario Lv 45 @ Focus Band
Ability:Steadfast
EVs:All random.
___ Nature
IVs:24 Hp, 12 Hp, Def: 5. 15 Sp A. 12 Sp def, 0 Speed

  • Work Up
  • Aura Sphere
  • Counter
  • Force Palm

Gardevoir Lv 45 @None
Ability: Trace
EVs: All Random
___ Nature: Careful
IVs: 1 HP, 20 Atk, 2 Def, 31 Sp.A, 0 Sp. Def, 11 Speed

  • Moonblast
  • Psychic
  • Magical Leaf
  • Calm Mind

Electabuzz @ Magnet
Ability: Static
EVs: All Random
___ Nature
IVs: 13Hp,10 Atk, 13 Def, 19 Sp.A. 8Sp.D, 13 Speed

  • Electro Ball
  • Thunder Punch
  • Discharge
  • Low Kick

I have/can have all pokes you can get until helios city, plus i have a Delta Aron with Brave Nature, Drought ability and good Ivs lv 1, no Evs yet.