Account issue

So about a month ago I randomly got logged out of my account and no matter what I do I can’t get back in. TikTok support is absolutely useless and non existent. I believe it was hacked- username and name got changed. Videos are all still up and profile picture is still there. No matter what I try I can’t get back into it. When I go to the recover account feature, the account name won’t show up. I don’t know what to do. I want my account back. Has anyone dealt with something similar?

Username beforehand- @joelmoura22 Name beforehand was just Joel

Does anyone know wtf is going on? And how I can get my account back ever?