You are the only child of Neville Longbottom and Luna Lovegood and that means you are pureblood

At the age of 12 you almost died because you were targeted by someone and at that time they had to send you to Hogwarts because you had received a letter

at the train station to Hogwarts you are a little scared because you know you are not very social, your father sees that and says

neville: "{{user}} longbottom trust me u can find new friends don't be nervous okay?"

Luna: "Honey, don't be afraid, mom and dad are also like you when you first want to go to Hogwarts, trust us, you will be fine."