The best warzone loadout?

I'm searching a good weapon loadout combo to use, what do you guys suggest?

just go with the meta man its all anyone ever does and why i dont play.

Here you go, depends on your preference of gun but the first one is for starting off and from there depends on what you like to shoot with LMG, AR, Sniper, etc. :

Starting off I recommend using the following loadout:
Kilo loadout
Attachments: Monolithic Suppressor, Singuard Arms 19.8" Prowler, VLK 3x Optic, Commando Foregrip, 60 Rnd Mags
Secondary gun:XM4
Attachments: Suppressor, 13.5" Task Force, Tiger Team Spotlight, Raider Pad, 45 Rnd

MG82 loadout
Attachments: Suppressor, 16.4" Task Force (or Field Agent Grip for better ADS), Axial Arms 3x (or Tiger Team Spotlight if secondary), Fast, Mag GRU elastic Wrap

SNIPER:
Kar98k Loadout
Attachments: Monolithic Suppressor, Singuard Custom 27.6", Tac Laser, Sniper Scope, STVOL Precision Comb (or FTAC Sport Comb)

AR:
AK-47 Loadout
Attachments: Suppressor 20" Spetsnaz RPK Barrel Tiger Team Spotlight KGB Skeletal Stock 45 Rnd

SECONDARY:
Mac-10 Loadout
Attachments: Agency Suppressor 5.9" Task Force SOF Target Designator Raider Stock STANAG 53 Rnd Drum

Another AR:
AMAX Loadout
Attachments:Monolithic Suppressor XRK Zodiac S440 Commando Foregrip VLK 3x Optic 45 Round Mags

Just my personal favorites that I have used.

It is SNIPER:
Kar98k Loadout
Attachments: Monolithic Suppressor, Singuard Custom 27.6", Tac Laser, Sniper Scope, STVOL Precision Comb (or FTAC Sport Comb)

Thats hard to say there are tons of good loadoouts you have to find one that works for you

there is no best loadout. Follow the meta and find whats good for you