To add a chatbot to your Facebook page, you can follow these steps:

Go to your Facebook page and click on the “Settings” option in the top right corner.
In the left-hand menu, click on “Messenger Platform”.
Scroll down to the “Add Messenger to Your Website” section and click on “Get Started”.
Follow the prompts to choose the type of chatbot you want to add (e.g. customer service, lead generation) and customize the chatbot’s greeting and response messages.
Once you’ve configured your chatbot, click on the “Get Code” button to generate the chatbot code.
Copy the chatbot code and paste it into the HTML code of your website.
Save your changes and the chatbot should now be live on your website.
Alternatively, you can also use a chatbot building platform, such as MobileMonkey, Chatfuel, or ManyChat, to create and manage your chatbot. These platforms typically offer a range of templates and tools to help you build and customize your chatbot without needing to know how to code.