LOST ACCOUNT!!!😭😭😭😭😭😭😭

I UPDAted my GD username, and when I went to log into it again. It said login failed. I changed it from RealAmethystGD to ItzAmethystGD. Can anyone check both users to check to see which one exists so I can login it, or if either got deleted 😭😭😭😭😭😭