I am not going to tell anyone that I am a millionaire.
Why do you feel the need to hide this fact from everyone?
I am afraid that rich people are perceived as worse people.
I can understand why you would think that way. You don't have to share your money with anyone if you so choose. People should like you for who you are and not the amount of money you have.
I know and it's not like I'm spending much, I got it from my grandma.
It does not matter how you got the money, you do not have to share with anyone if you do not want to. It is your money, and you do not have to tell anyone about it.