if by macker you mean jordan manuel rivera aka diddles then he can be found
here  >>/49863/
here  >>/49866/
here  >>/49873/
and in sex chats with little boys
i wouldnt be surprised if he went back to roblox after hearing about all the fun and games his people been having with the kiddies since he left
maybe you should pretend to be a little boy there or on deviantart and wait for him to give you his discord handle himself