Hello I think I’ve been hacked can someone please explain???

If you created an account with the “sign in with apple” button, a lot of times they give you that weird email. I would go to Settings > Apple ID > Password & Security > Apps Using Apple ID and try to find TikTok there. Hope this helps!

go to your icloud and see if it matches up to that. If u sign in with ur phone it makes an email like that for u