If the account has not been signed in to for more than 2 years, I’m afraid it may already have been deleted due to inactivity.
As stated by Microsoft, accounts that have not been signed in or have been locked for more than 2 years will be deleted due to inactivity, and they can no longer be recovered: https://support.microsoft.com/topic/microsoft-account-activity-policy-7c0a9fa7-0982-b7c6-fd72-df852b63699f
If the account does not have an active 2FA and you do not have access to the verification method, I'm afraid the only way to recover the account is through the account recovery web form: https://account.live.com/acsr
You'll need to keep trying until you're verified by Microsoft, and you can do this up to 2 times every 24 hours.
If your Microsoft account recovery request was not granted, please review this link for tips on improving your chances of a successful recovery: https://support.microsoft.com/office/dc56c3e3-dff0-4ed5-8edb-60290eea6b53
Please be advised that Microsoft Support will not be able to grant you access to any account.
Thank you for your understanding.
Best regards,
Darhyl