My Simple Ui made with Elvui, the Ui doesn't track any resource like Mana or Astral Power, i track them with a Weak aura.
MANA BAR WA: https://wago.io/IMQyexxVk
CD Tracker: https://wago.io/QECqb2IH4
You can use this Ui with another classes but make sure to use a resources tracker.
If you have any issue or question leave me a message in my Battle net LordRagnarok#11391