I Want Help Recovering My TikTok Account

I'm writing regarding my TikTok account with the username @fednantfr***. About seven days ago, I performed a factory reset on my phone, and after the reset I was logged out of my TikTok account. Since then, I have been unable to access it. For this account, I know the username, my date of birth and my full names, and I previously used TikTok on another device as well, which I believe I last used around January before logging in on my current phone. The account was not fully linked to my email, but I used to receive notifications to that email whenever someone commented or sent a message, so there is a clear connection between that email and my account. At the moment, I cannot log in because I no longer have the previous device and I do not have any other login method active. I have already tried to follow the steps suggested by TikTok Support and in the help center, but the methods you recommend are not working in my case and I still cannot pass the login or recovery steps. I have provided all the information I have, but I'm stuck without any way to verify my identity through the standard options. My request is that you help me restore access to my account based on the information I can provide, so that once I'm logged in again I can immediately link the account to my current phone number and secure it properly. I kindly ask you to review my case in detail and offer a manual solution to recover my account.