I understand your frustration, as I'm a Microsoft user as well.
There is a possibility that a hacker repeatedly tried to sign in to your account, which triggered the system to detect multiple failed sign-in attempts or an unusual login pattern and resulted in the account being temporarily blocked.
Once you have recovered your account via the account recovery web form (ACSR), kindly secure your account by enabling the two-step verification feature and ensure that your verification methods are updated on account.microsoft.com > Security > Manage how I sign in
Lastly, please follow the guide from this thread to prevent unauthorized logins: https://learn.microsoft.com/answers/questions/4049625/someone-is-repeatedly-trying-to-access-or-hack-my?forum=windows-all&referrer=answers
Best regards,
Darhyl