A great way to give your chatbot visibility is to make your chatbot pop-up automatically when someone is on your Facebook Page. This works on desktop and mobile and is actually a Facebook Option within your account.
Here are the steps to make that possible :
1 - Go to your Facebook Page settings
2 - Go to the Messaging Tab
3 - Check the "Prompt visitors to send messages"
- This option can take a few days to get active as you need to be "online” or your Page needs to be “very responsive to messages."
- This means your bot you will have the very responsive to messages badge but it can take some time, so remember to be patient.