I’m sometimes asked; why not just use my Facebook profile rather than set up a Facebook Business page?
The answer is a simple one. The level of tools available to see who liked your post, where the people who like your page live, what gender they are, what time they are online and so on make it much easier to reach them with your message of help.
Make it easy for the people who need your service to find you. Look at your Facebook Business Page ‘insights’ and use that info to make your life and their life easier.