if i restrict someone on messenger what happens

When you restrict someone on Messenger, their chats disappear from your main chat feed, and you no longer receive notifications for their messages or calls. They can still message or call you, but you won't see their messages as notifications, and their chat is moved to a separate restricted inbox. Additionally, they cannot see your active status or when you last read their messages, and you won't see theirs either. They won't know that you have restricted them because no notification is sent, and they stay on your contacts list. This feature allows you to limit interactions with someone discreetly without blocking or unfriending them.