You do not have to sound perfect.
A UYB answer can be short, messy, or quiet. Start with what you wish the other person understood.
Private does not mean hiding danger.
Your writing space is private, but danger should not stay hidden. If someone is hurt, threatened, unsafe, or scared, tell a trusted adult outside the app.
You can take time.
You do not have to answer while upset. You can come back later, write a smaller sentence, or use the private space first.