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If you've forgotten your password for a Microsoft 365 Business email account and you don't have an admin to contact, you're in a bit of a tricky situation. However, there are some steps you can take to try to resolve the issue:
Self-Service Password Reset: If self-service password reset has been enabled for your organization, you might be able to reset your password yourself. Usually, this involves verifying your identity through a secondary email address or phone number that was set up previously.
Check for a Secondary Admin: Sometimes, organizations have more than one admin account. If you have a colleague who also has admin privileges, they could reset your password for you.
Contact Microsoft Support: If you're the sole admin and you've lost access, you'll likely need to contact Microsoft Support directly. They have procedures for verifying your identity and helping you regain access to your account. Note that you may need to provide proof of purchase or other verification details.
Check with Your IT Service Provider: If your Microsoft 365 Business account was set up through a third-party IT service provider, they might have admin access and could reset your password for you.
Use Another Account: If you have another account with admin privileges, you can log in with that account and reset the password for your main account.
Recovery Email: If you had set up a recovery email when setting up your Microsoft 365 Business account, check if you can use that for resetting your password.
Last Resort - New Account: As a last resort, if you can't regain access to your admin account and you have no other admin accounts, you may have to set up a new Microsoft 365 Business account. This is obviously not ideal, as you'll lose access to all data and settings in the old account unless you can recover the password.
Remember that security protocols are in place for a reason, so you may need to go through several verification steps to prove that you are the legitimate account holder. Always follow Microsoft's guidelines and recommendations when dealing with account recovery.