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 Spirit
A Build that is capable of doing extreme levels of burst damage, and focuses on gathering enemies around for these instances. The Build primarily revolves around the use of Bone Spirit.
Shadow Minion
This Build revolves around allowing your Minions to be your main source of damage, while you help them out with your own DoTs. Damage from this Build primarily revolves around your Skeletal Mages, rather than your own.
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.
Resources and Links
Dexerto
Necromancer Best Builds