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
This is a very satisfying Build focused on gathering up enemies and doing extreme levels of burst damage to them. As per its name, the build primarily revolves around the use of Bone Spirit.
Shadow Minion
This Build relies on your Minions as your main source of damage, while you help them out with your own DoTs (damage-over-time skills). Damage in this Build will primarily come from your Skeletal Mages, instead of your own skills.
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