If you're using GB WhatsApp, there's a chance you may have hidden chats that you're not aware of. Here's how to find them:

1. Open GB WhatsApp and go to the Chats screen.

2. Tap the menu button (three dots) in the top right corner and select More.

3. Select Hidden Chats from the list of options.

4. All of your hidden chats will be displayed here. You can tap on any of them to view or un-hide them.

Keep in mind that hidden chats are only hidden from the Chats screen. They will still appear in your chat history and will be backed up to your Google Drive (if you have backups enabled).

If you're not using GB WhatsApp, then there's a chance your hidden chats are actually just archived chats. To check if this is the case, simply go to the Archived Chats section of WhatsApp and see if any of your chats are appearing there. If they are, you can un-archive them by tapping on them and selecting Unarchive Chat from the menu.