Hi, @HayGirlGamer, if you want to delete some of your account, click on the icon with your profile picture in the upper right corner of the screen (the blue&white "H" in your case) –> click 'Edit Profile' –> click 'Delete Account' at the bottom of the menu on the left.
Screenshot 2019-09-18 at 10.09.25.png
If it doesn't work, please let me know (via chat or email) the username and/or email address and I will delete that account for you.