Once your Necromancer reaches level 50, you will be in a prime position to pick and work towards your Build. Keep in mind that your Build will not only define your gameplay going forward, but also your optimal armor and weapons.
Below you can find some of the best Necromancer Builds for Diablo 4.
Bone Spear
A great self sustaining Build that allows for constant crits and an endless supply of Essence, all while keeping a safe distance from your enemies. Damage from this Build primarily revolves around Bone Spear.
Infinimist
This extremely tanky Build allows you to deal massive AoE damage, while being practically immortal! The Build primarily revolves around the use of Blood Mist.
Sever
This cool looking and flexible Build allows you to take out waves of enemies quickly, while constantly keeping them Crowd Controlled. Damage from this Build primarily revolves around Sever.
Resources and Links
Dexerto
Necromancer Best Builds