Hi! My name is Aj and Im an Independent Advisor here to help! Im sorry to hear about your account. I would suggest to wait for 24hours to try again, try logging in using a different browser/device, use inprivate mode, clear your browser's cache, reset your password.
Please check this guide https://support.microsoft.com/en-us/account-billing/account-has-been-locked-805e8b0d-4141-29b2-7b65-df6ff6c9ce27 and use the "Sign in helper" Tool
I understand that you already submitted the form but in order to regain access you will have to pass the recover form so please submit another one at https://account.live.com/acsr and this time give as much detail as possible like old passwords, devices, purchase history, account usage, etc. Use stronger information. You can submit up to 2 forms a day. After submission allow 24-72 hours for verification. Please check this guide on how to properly submit the form. https://support.microsoft.com/en-us/account-billing/help-with-the-microsoft-account-recovery-form-b19c02d1-a782-dee6-93c3-dc8113b20c42
You can also directly contact support and explain your situation using a working email https://support.microsoft.com/contactus and choose Microsoft account & billing as the product then choose request a chat or a call back.