Is it better to declare one's reversion to Islam or to keep it a secret, especially if acts of worship are performed in private?

The fundamental principle is that a Muslim should manifest the effects of repentance and guidance in their conduct and acts of worship, and they are not required to inform those around them unless there is a need, such as refusing a sin. However, if they face harm from openly declaring their repentance and acts of worship, they may keep them private until the harm ceases. The situation differs between men and women; a man is obligated to perform congregational prayers and the like, whereas a woman is enjoined to observe modesty and the hijab. The preference for open declaration depends on the circumstances surrounding the individual and the society in which they live.