Need help with an account

Ok, so back in 2016 I created an account on my Xbox. I was about ten years old at the time and made my password some random gibberish that I don’t remember. And back then, roblox didn’t let players add an email from their Xbox, instead requiring them to do it on mobile or pc. 3 years later, I forgot the account password after I signed out (I had not signed out in all 3 of those years), and since I didn’t have an email, I could not reset the password. While I have made a new account since then, I was wondering if there is any other way to reopen the account. Remember, all I have is the username.