How do I lead a team when I miss doing the work myself?

You lead the events team now. The flawless moments still happen, but they happen through your planners, not your own hands in the room. If you miss being the one who actually runs it, that is not immaturity. It is the normal ache of trading a craft you loved for the job of leading people who now do it. Something real was lost in the move, and it is worth admitting rather than pretending the promotion was pure gain. You used to feel the room come together under your own control. Now your work is one step removed, and the satisfaction is quieter and harder to feel. That distance is the price of the role, and grieving it a little is honest. But your craft has not vanished; it has changed shape. Making a nervous planner calm and capable is its own kind of running the room. Find your new satisfaction in that: mentor deliberately, and let yourself feel the win when someone you built pulls off a perfect night. And now and then, get your hands dirty on one event yourself, just to feed the part of you that still loves it. Do that this season. You can lead well and still keep a piece of the work you love.