just came back after a 6+ month break

looking for best necromancer dps builds

For season 4, the best would be either Golem or Shadow mages necro. Both are around the same.

Just make sure to have a good blighted aspect for your two-hander and a golem mastery armor with masterwork on it. It does insane damage.

Here is a guide to get you started: https://mobalytics.gg/diablo-4/builds/necromancer/golem-guide

You can push high pits and kill tormented bosses easy with it.