Ban Annette when:
• Your team lacks reliable CC to shut them down.
• An enemy player is a known Annette one-trick (check match history).
• No one on your team plays Annette's counter picks comfortably.
Skip Annette when:
• The enemy has already locked Annette counters (e.g. CC-heavy tanks / burst assassins).
• Your team comp doesn't support Annette's playstyle — missing frontline (for carries) or missing damage follow-up (for tanks/fighters).
• You're not comfortable on Annette. Ranked is not practice mode — play what you know.
Bottom line: Annette can dominate in the right hands and the right draft. But forcing it into a bad situation is the fastest way to lose LP.