Trying to create a Teams meeting, but get "Forbidden"

Question

I have created an Azure AD application using work email account, and now trying to allow my app users to create MS Teams meetings, after authenticating their accountswith my app. But I always get this error as a response for a post request to: "https://graph.microsoft.com/v1.0/me/onlineMeetings"

{
"error": {
"code": "Forbidden",
"message": "An error has occurred.",
"innerError": {
"date": "2022-05-25T04:52:58",
"request-id": "418863b2-8c12-47d0-8be7-bcd53b24db79",
"client-request-id": "38cc0c95-b9ae-a706-9f1c-e24d75aa07cd"
}
}
}

am getting same erorr on running same at graph explorer

decoded token and permissions granted were attached