Unable to Access Microsoft Outlook Account After Security Warning

I recently received an email on my Microsoft Outlook account saying, "We think someone else might have accessed your account," with a button to verify my account details. I didn’t pay much attention to it, but now I can’t access my account at all. When I enter my password, it redirects me to an account verification screen. Despite entering my phone number correctly, it says it doesn’t match, and now it’s telling me there’s a temporary service issue. I’ve tried everything, but I still can’t get in. Please, I need urgent help with this issue.