help with my entity relation diagram.

I$\text{'}$m designing an ER diagram for my application "Anees" and i need help identifying errors in my design and enhance it$.$ Anees is an AI$-$powered, safe children chatting application.

The application has parent interface and a child interface. Parent must create their account and add their children linking them to their account, only then the child can use the app and log in$.$ Children chats automatically detect inappropriate language or sensitive topics that children may discuss during their conversations. When any inappropriate content is detected by the model, it encrypts it and then decide on whether or not it sends instant notifications to parents based on the system's analysis of the conversation$$s level of risk. if it was a high risk level, it will flag the interaction as $($flagNotification $=$ yes$)$ and the system will take all interaction with this flag and saves it in a notification only table and then send it as a notification to the parent as well as display it in their interface.

this is my initial design of the entity relation diagram.. I$\text{'}$m finding troubles visualizing the child's frindship relation, i want to represent that children can be friends with each other and that friends of the child are logged in a friendList that every child has. I don't know how to connect them and if my representation is logical$.$ I$\text{'}$m also struggling with identifying weak entities and the participation level. please help me identify these problems.