To choose class + build? Can you play builds that are not optimal? I prefer necros that are summoners or maybe a blizz sorc? or a shapeshifter druid?
Granted, i'm basing this on D2, as i've never played D4.....

https://maxroll.gg/d4/build-guides?filter[build_guide_type][filters][0][taxonomy]=taxonomies.build_guide_type&filter[build_guide_type][filters][0][value]=archive&filter[build_guide_type][filters][0][operation]=!%3D&filter[build_guide_type][filters][1][taxonomy]=taxonomies.build_guide_type&filter[build_guide_type][filters][1][value]=%20&filter[build_guide_type][filters][1][operation]=NOT%20EXISTS

This site is beginner friendly wirh explanations.