Quick answer
New killer wants a first reliable build.
The build structure
A beginner killer build should include one tracking perk, one generator slowdown or regression tool, one chase helper, and one flexible perk for your killer power.
Tracking comes first
If you cannot find survivors, your slowdown perks will not matter. Pick a perk or add-on setup that helps you locate your next chase quickly.
Do not overstack slowdown early
Slowdown can win games, but new killers improve faster when they learn chase decisions and map pressure instead of only waiting for perks to carry the match.
Can one build work on every killer?
A general structure can work, but the best final perk often depends on the killer power and map pressure.