At a loss … can I get my iCloud back?

Someone changed my Apple ID password, and when I went to change it back and hopefully save my account my trusted number was no longer the number I have used/had linked to my account since the beginning of my apple use. So I have now lost all of my iCloud saves and email? Forever? Is there *any* way to confirm identification and get access to all of my data again. That email is linked to every app I own. I’ve made a lot of purchases too. So I can’t recover? Desperately asking for assistance!

I know my bank has multiple questions to confirm I am who I am including even voice recognition! You would think apple could help and be more vigilant on this fraud issue.