I am using organization Outlook account. My aim is to get List of Calendar Events in the Laravel controller. Steps I followed:
Created simple application in
In your screenshot, it says that admin consent has not been given for the permissions you've set on the app registration (the "Not granted for..." status in the permission list). Because you're using client credentials, the application permissions (not the delegated permissions) are applied. Since admin consent has not been granted, your token has no actual permissions in it.
You need a tenant admin to go to your app registration and grant admin consent.