Hello @MD. ASHRAF BHUIYA ,
Thanks for reaching out.
Hope you might have look at "Azure AD password policies", if not then I would recommend you to make sure your new password comply with Azure AD password policies.
Ideally, The Azure AD Identity Protection team constantly analyzes Azure AD security telemetry data looking for commonly used weak or compromised passwords. Specifically, the analysis looks for base terms that often are used as the basis for weak passwords. When weak terms are found, they're added to the global banned password list. The contents of the global banned password list aren't based on any external data source, but on the results of Azure AD security telemetry and analysis.
In addition to that make sure you are not using any Custom banned password list which are added your company administrator. To learn more about Global banned password & Custom banned password, refer.
Hope this helps.
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