I haven't done my research yet, but the website I made when I was 15-16 is archived and needs to come down. I'm hoping being made by a minor helps? Anyone had experience taking stuff down or do you have to issue a DMCA?
It's hard to put genies back in bottles. If you still own the domain, my understanding is that the Internet Archive does respect robots.txt even retroactively. Otherwise, you can try doing a DMCA takedown but you may not have much luck as you no longer have any directly-established ownership over the content.