Integrate Mendix Application with MS Teams through Graph connector

Question

HI TEAM ,

i want to integrate my mendix application with MS TEAMS. i have few queries regarding this =

1. I have to purchase paid Azure Account ?
2. Can i use my Work mail id for App Registration ? If yes then i am not sure i get the admin rights from organization.
3. Can i Use Teams REST APIS freely?
4. For Accept the consent i have to use the same Email id for which i do app registration ?
5. Which permissions like Delegated or Application i should use to integrate my mendix application with MS Teams.
6. If i use my personal gmail ID for the app registration in Azure AD and same personal ID i provide during the consent approval popup then , if it is possible to send/receive chats in MS TEAMS through Graph connector?

Thanks !!