They aren't deleted you'll get them back.
don't worry, ppl whose acc were made in 2014 and 2015, as in earlier years, slowly got their reads back.
Currently 2019 users are getting it back and it has started for 2020 users too.
https://www.mangago.me/home/people/65330/home/
https://www.mangago.me/home/people/7934/home/
https://www.mangago.me/home/people/12004/home/
so yeahh it'll take quite some time but you'll get them back.
also once they're back, in case you're looking for ways to save them perhaps in an excel file, I've made a tutorial on how to do it easily and quickly rather than having to enter everything manually one by one, so if you'd like, you can check it out.
https://docs.google.com/document/d/14Drj0CviUhrAmZlU-DC-AtxGFQoH1_PYQ81b2Vzu82w/edit?tab=t.0
also for more doubts refer to this faq
https://www.mangago.me/home/mangatopic/21080691/
Did it take this long? I'm way to sentimental for this. I can't even
my account was created in 2015 and almost none of my stuff is back :/
its been over 24 hours so yeahh it'll take quite some time for the new gens acc to get their stuff back considering 2020 users are getting theirs after almost 24 hrs
check out this faq, you might get your answers, its more dependent on when you added the stories rather than your account date, i didn't explain deeply sorry.
https://www.mangago.me/home/mangatopic/21080691/
when all ur thousands of stories r gone kms lmao at least the site still works who knows