Hi there,
Once you created the event, the weblink provided will open a modal dialog as below.
But you mentioned that it shows the other outlook items like email, people, groups etc..
Maybe can provide me bit info which UI part related to the info?
Suggestion: Because the UI generated with specific design, maybe if you only require a basic info like subject, content, location name & datetime, then you can utilise the Graph API GET call https://graph.microsoft.com/v1.0/me/calendar/events/{id}
After fetching the info, you can create a custom UI for it.