Facebook displays the name of the third party tool like SocialPilot used to share that content on your profile. By default, it shows our name but you can overwrite this by adding your own Custom app. We call this feature as Custom Facebook Branding. You can learn more about this from https://socialpilot.co/features/custom-facebook-branding/
And also, follow these steps thoroughly on how to set up your Custom App and connect it to SocialPilot to publish your posts with your own brand name instead of SocialPilot on your Facebook profile.