Maybe I missed something, did you ever post that address with that account?
According to ninjastic.space he didn't share any address with that account. Without either that or access to email afaik nothing can be done to retrieve that account.
It will be better to provide some more information like when you post last message here and also You must have received the email change mail in your previous Email. You should provide this screenshot here so that moderators see your case properly.
Since he said that he doesn't have access to that email I don't think that would work. But even if he had, I doubt that would serve as any sort of evidence since it can be faked.
@Fleshslasher you claim in that first post that email has been changed, while bpip shows that it hasn't been changed. Are you 100% sure that you don't have access to that email address?